I have some disagreements with it, too, but keep in mind that I have disagreements with a lot of things that we're talking about -now- when we should presumably be more educated.
For instance, we don't beat Peach, at least by any significant margin, I don't know where you guys are getting that.
MK - at least a good-sized disadvantage, perhaps worse, it's hard to say
Snake - I don't know, he has better stats but we have a better moveset, it's like we own him and then oops utilt at 90
Wario - Even, perhaps a slight zss advantage
Diddy - I don't know, I haven't played a good diddy in a while and last time I did I felt it was 4/6 but I'm better now, and everyone tells me it isn't that bad.
Falco - lol
Dedede - Like Snake. You will own the **** out of him and then get blocked and utiltlol'd
Also:
Link: this match-up is even, please play a good link like legan or kirin or even sasook and tell me it's not even, you wont' gimp him usually. the only time you can gimp link with zss is when he screws up and your only real option vs his projectile game is to powershield and walk.
Samus: dead even, for about the same reason we lose to falco. her projectile game isn't all that but ZSS gets messed up by projectiles. however, samus is floaty and heavy and moves slowly in the air and is easily juggled. Once she's up, she has no real options.
I'm sure there are more, but yeah.