Cammy couldn't cross up with lk reliably, but her divekicks were more likely to cross up in Vanilla than they do now. Also, her DP did 150 damage on the first couple of frames, so DP FADC DP did 300 damage instead of the 200 it does now. And her non cinematic Ultra did more damage... Her far RH kinda sucked, but other than that I would definitely put her top 10 in Vanilla. Thing was, everyone was cheap as hell in that version. Sagat, Akuma, Ryu, Seth, Balrog, Bison, Zangief, Rufus, Cammy- Everyone else was pretty mediocre compared to them.
Cammy was definitely at her strongest in Super, but I'd still only put her at only second place after Akuma. Balrog and Bison gave her trouble but I think that was it.
In AE she was good, but not top 5. Top 10 definitely. She didn't have all the same setups off of RH spiral arrow that were in every other version of the game.
I think AE Yang and maybe AE Fei Long could maybe hang with the Vanilla top 5, but I don't Yun could take it. Dat Vanilla damage too stronk.