Originally Bespoken by
Aerith's Knight
the Death spell works on end-boss sephiroth in FFVII.. so if hed use barrier here, i dont see why Cloud couldnt use destruct.. anyway, it would just give some good special effects

But you normally can't use Death in the final Sephiroth fight - unless you use hacks, I guess

it would be a lot better to explain then reflecting bullets with your sword -_-
That's entirely plausible, assuming that the characters have the enhanced strength and reflexes to see where their opponent is aiming, and put a sword in the way. It also depends on their swords being made of something much tougher than steel, but that seems likely since Cloud's sword can shatter reinforced concrete and doesn't break under its own weight.