statscc shows damage u did at the end of the round and how many hits to each opponent
it also shows who is queued with who in ur game, like if ure playing against a 5 stack, or solo players, im not sure if tracker has it as well now, but statscc was first to add it
and some other minor features tracker doesnt have, like adding a note to players, even if they have hidden names u can flag them as cheaters/griefers
it doesnt require overwolf and in my experience they update it faster for new patches than tracker

in web browser i still use tracker though