Hmm... characters better than ZSS:
MK, Snake, Wario, Falco, Diddy Kong, Dedede, Marth, G&W, Pikachu, Olimar, Ice Climbers, ROB, Kirby, Lucario.
...
Oh but seriously anyone currently in S tier she is not better than (at the moment), so that's 6.
She is not going to be better than:
Marth, Ice Climbers nor Pikachu any time soon.
So that's 9.
I think Lucario's over all better. So that's 10.
That's a bit of a future stance. At the moment I'd say Olimar, G&W and *hick* ROB are still better. Maybe
Chudat too.
But yeah, ZSS I don't think has the ability to go above 11th, at least with my current perception of the game.