In the other game he has a guest appearance in, he can fly, evidently. And Breaks Limits are a tricky thing. They appear in the game to be damagae induced, but at the end when Cloud and Sephiroth are squared off, just the shear presence of Sephiroth gets Clouds Limit soaring up to the point of Omni-Slash Heaven!

I guess if Cloud gets mad enough, he can use Limits, but then again, I highly doubt that if no one other than Sephiroth could induce that type of Limit to occur, then X doesn't have a shit shot in hell to do it. Damage would appear to be the way in this Battle case.