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Dark.Pch
: Of course! I completely get your point.
However, before analysing Peach's match-ups, we had to understand her moveset. It's been greatly improved from Brawl. This is where our excitement lies. It doesn't lie in her ability to become Brawl's Meta Knight thanks to her buffs yet.
Marth and Meta Knight, Peach's (former?) nemesis, suffered numerous nerfs. Ganondorf did not change much from Brawl. Mario's only significant improvement is his Down-Throw, which Peach also possess. It makes me hopeful that Peach will improve her standing in the Smash World.
Of course, rising stars like Shulk, with his ridiculous range, will be incredibly difficult to deal with. Only time will tell, like you said! However, I am confident SSB4 provided us with sufficient tools to make a great difference.