Who is stronger, Cloud or Zack?

[ReloadPsi]

Well it seems you're more going for the retconned version of the story and characters anyway. The Cloud in Crisis Core and the rest of the compilation, as maybee points out, is basically not the same character, and if you're going to retcon something I like for the sake of earning some more money, damn straight I'm going to treat it like it's non-canon.

And if that's not what you're doing... well then you're asking the same thing as who'd win in a fight between Adam West's Batman and Heath Ledger's Joker. It's a ridiculous comparison because they're from two completely different worlds.

Cloud in the Compilation is an irritating pussy. Zack in the Compilation is a bad-ass.

Cloud in the original game is a bad-ass who awakens from a two-week coma and is fighting Carry Armor and hijacking submarines the same day. Zack in the original game is seen getting curbstopmed by Sephiroth and killed by a Shinra soldier, guys who normal people like Tifa, Barret, hell, even Aeris, smurfing AERIS THE FLOWER GIRL can kill by the dozens with no apparent effort. And it's just one Shinra soldier too seen to be killing him, accompanied by two others. Crisis Core retconned it into a full-on Bolivian army ending. That is not what we were shown; remember Cloud has total clarity of his memories by the time we're shown this scene.