Sophita isn't a win button at all. I feel like I have to work harder with Sophie, than I do with Cass (but of course, Mina takes the cake). Soph doesn't have a mixup game, unless you consider mid vs 66A+G I guess. You really need to be on your toes, and look for openings where she can get in (with AA, BB, 236B, 236236B, etc). And her most damaging juggles are harder than most (I find it hard to buffer 236236B for juggles, although I'm getting better). Plus no stuns almost :(.
Online, she looks broken, as 1AA and 4AAA become god like. The "correct way" (notice " ") Sophie, gets hurt in lag, with her punishment and spacing game heavily reduced. Just my thoughts.