Heroes of the Storm

Do 5 Stacks Have an Advantage – The Stats Revealed

HeroesoftheStorm 10 - Do 5 Stacks Have an Advantage - The Stats Revealed
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There has been a lot of discussion around these parts about unfair advantages by playing as a group in Storm League, unfortunately this was all based on anecdotal evidence.

To try and solve the problem I purchased API access to Heroes Profile and taught myself Python to see what the data tells us (all data is from 2020).


Lets start with the headline results

Across the sample of 8,410 Storm League games:

  • 5 stacks won 53% of the time
  • 4+1 stacks won 54% of the time
  • 5 solo players won 48% of the time
  • everyone else is at a 50% win rate

  • The most common team comp is 3 solo players and a 2 stack (31% of games)
  • 5 stacks are involved in 10% of games
  • The matchmaker does not like putting a 2 stack and a 3 stack together (only 2% of games)

  • 5 stacks are almost never matched against 5 solo players (only 5 games out of 8,410)
  • 5 stacks are most often matched with 3 solo + 2 stack (48% of the time)
  • 5 stacks beat other comps between 52% and 60%, except for against 4+1 stacks where they actually only win 45% of the time

  • 4+1 stacks are most often matched with 3 solo + 2 stack (32% of the time), but they are also matched against 5 solo players 26% of the time, they are very rarely matched against other 4+1 stacks (3% of the time)
  • 4+1 stacks beat other comps between 53% and 61% (although the 61% is a very small number of games so the figure is not reliable), except for against 1 solo player and 2x 2 stacks where they only win 39% of the time

  • 3+2 stacks did not have enough games to draw reliable conclusions (2% of total games)

  • 2 solo player and a 3 stack lose out to some comps but beat others to average 50% overall

  • 1 solo player and 2x 2 stacks also lose out to some comps but beat others to average 50% overall

  • 5 solo players most often play other teams of 5 solo players (36% of the time)
  • next most common is to play against 3 solo players and a 2 stack (30% of the time) which they only win 47% of the time
  • 5 solo players don't have a win advantage over any other composition

This table shows the overall wins and loses for each composition type

Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack857756161353%47%±0%10%
1 Solo Players + 4 Stack700606130654%46%±0%8%
3 Stack + 2 Stack20119940050%50%±0%2%
2 Solo Players + 3 Stack14371426286350%50%±0%17%
1 Solo Players + 2 Stack + 2 Stack677666134350%50%±0%8%
3 Solo Players + 2 Stack25442590513450%50%±0%31%
5 Solo Players19942167416148%52%±0%25%
Overall841084101682050%50%±0%100%

note: Total Games Count is double the number of matches analysed since it counts the result from each side individually


This table shows the wins and loses for a 5 stack against each of the listed team compositions

5 Stack vs Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack11811826350%50%±1%8%
1 Solo Players + 4 Stack728816045%55%±1%11%
3 Stack + 2 Stack18143256%44%±4%2%
2 Solo Players + 3 Stack17616233852%48%±0%23%
1 Solo Players + 2 Stack + 2 Stack785213060%40%±1%9%
3 Solo Players + 2 Stack39232071255%45%±0%48%
5 Solo Players32560%40%±25%0%
Overall857756161353%47%±0%100%


This table shows the wins and loses for a 4 + 1 stack against each of the listed team compositions

1 Solo Players + 4 Stack vs Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack887216055%45%±1%10%
1 Solo Players + 4 Stack42428450%50%±2%6%
3 Stack + 2 Stack22143661%39%±3%3%
2 Solo Players + 3 Stack1078419156%44%±1%15%
1 Solo Players + 2 Stack + 2 Stack426610839%61%±1%8%
3 Solo Players + 2 Stack21019040053%48%±0%31%
5 Solo Players18913832758%42%±0%25%
Overall700606130654%46%±0%100%

This table shows the wins and loses for a 3 + 2 stack against each of the listed team compositions

3 Stack + 2 Stack vs Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack14183244%56%±4%2%
1 Solo Players + 4 Stack14223639%61%±3%9%
3 Stack + 2 Stack11112250%50%±6%6%
2 Solo Players + 3 Stack43489147%53%±1%23%
1 Solo Players + 2 Stack + 2 Stack25184358%42%±3%11%
3 Solo Players + 2 Stack574510256%44%±1%26%
5 Solo Players37377450%50%±2%19%
Overall20119940050%50%±0%100%

Загрузка...

This table shows the wins and loses for a 2 Solo Players + 3 stack against each of the listed team compositions

2 Solo Players + 3 Stack vs Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack16217633848%52%±0%21%
1 Solo Players + 4 Stack8410719144%56%±1%7%
3 Stack + 2 Stack48439153%47%±1%3%
2 Solo Players + 3 Stack22422444850%50%±0%16%
1 Solo Players + 2 Stack + 2 Stack12912024952%48%±1%9%
3 Solo Players + 2 Stack41041282250%50%±0%29%
5 Solo Players38034472452%48%±0%25%
Overall14371426286350%50%±0%100%


This table shows the wins and loses for a 1 Solo Player + 2 stack + 2 stack against each of the listed team compositions

1 Solo Player + 2 stack + 2 Stack vs Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack527813040%60%±1%8%
1 Solo Players + 4 Stack664210861%39%±1%8%
3 Stack + 2 Stack18254342%58%±3%3%
2 Solo Players + 3 Stack12012924948%52%±1%19%
1 Solo Players + 2 Stack + 2 Stack838316650%50%±1%12%
3 Solo Players + 2 Stack19017936951%49%±0%27%
5 Solo Players14813027853%47%±0%21%
Overall677666134350%50%±0%100%


This table shows the wins and loses for a 3 Solo Players + 2 stack against each of the listed team compositions

3 Solo Players + 2 Stack vs Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack32039271245%55%±0%44%
1 Solo Players + 4 Stack19021040048%53%±0%8%
3 Stack + 2 Stack455710244%56%±1%2%
2 Solo Players + 3 Stack41241082250%50%±0%16%
1 Solo Players + 2 Stack + 2 Stack17919036949%51%±0%7%
3 Solo Players + 2 Stack732732146450%50%±0%29%
5 Solo Players666599126553%47%±0%25%
Overall25442590513450%50%±0%100%


This table shows the wins and loses for a 5 Solo Players against each of the listed team compositions

5 Solo Players vs Team CompositionWinLoseGames CountWin %Lose %99% Confidence% of Games
5 Stack23540%60%±25%0%
1 Solo Players + 4 Stack13818932742%58%±0%8%
3 Stack + 2 Stack37377450%50%±2%2%
2 Solo Players + 3 Stack34438072448%52%±0%17%
1 Solo Players + 2 Stack + 2 Stack13014827847%53%±0%7%
3 Solo Players + 2 Stack599666126547%53%±0%30%
5 Solo Players744744148850%50%±0%36%
Overall19942167416148%52%±0%100%

So there are the figures, let the arguments commence.

Note – I retyped the figures above manually, so if anything doesn't add up I probably mistyped, but let me know and I will fix.

Source: Original link


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