There's lots that can be said about Id. His massives speed advantage, for one, which will take the wind out of Nel's sails something fierce. His damage, for another, which can easily 2HKO his frail opponent, forcing her to either heal or die. His evasion, which will keep Nel from doing enough damage to take him out in time. His defense against magic attacks, which willl be helpful if Nel tries to stay away and try Symbology attacks. Or his own Ether attacks, to repay Nel with her own coin. And, of course, his HP score, which dwarfs that of his opponent. You can say all that and more, but why bother? The only thing you really need to say is that he's going to win.