Yeah, but for one small thing: in a ‘zero-sum’ game like this (one player wins, another loses — or, in rare cases, it’s a draw) the best deck in the world is gonna have exactly 50% win rate if everyone plays it. By the way, that’s why there’s no such thing as an abstract ‘win rate of a deck’.
Which is arguably the contender for ‘the dumbest way ever to rank anything — or anyone’. 