Win % is the share of rounds won in a race type and distance this season, with each round weighted by how often matches get that far. Lists only use races with 6+ rounds.
“× avg” is how often a core earns its team the point (wins the race, or top 3 in madness) against an average entrant; cores with 10+ races this season.
Pick and ban come from your Power minus theirs on each map. Power: the share of rounds you'd win against an average team, after allowing for opponents (50 = average).
A round is one race of a map; whoever wins it gets the point. Win % here is the share of rounds won in each segment this Season 01, with each round weighted by how often maps reach it (most maps end by round 27–30).