There is absolutely no chance that Ewing will ignore the concept of mutant magic being superior to all other forms of magic, to do otherwise would be to forgo the chance to dump on Dr Strange the same way he did Reed/Tony when he bumped Forge up to Omega just because
There’s just the small problem that, from what we saw in Sins, Storm didn’t use Mutant Magic as put forth in Excalibur. She called on elder gods and her own human ancestors to do so with a powerboost from Khora