Its misleading to show someone’s win percentage as an aggregate of all game types as each game type takes a different skill set. Show individual win rates for each game type to get a real sense of the players skill.
E.g. A player thatat has a 60% 1v1 win rate, will drop down from playing 1v4 games with a 25% win rate.
Also, when checking a players profile, while playing for example 1v1, show the win rare for 1v1 while you are playing 1v1 since that is the most relevant metric to judge their skill. Or show all of them, either option.