Thor is several inches broader and taller than Spider-Man. (And X, and Storm.)

In this case, the size of the target doesn't really matter. There are enough spears to go around. And between the heavy, razor-sharp points and the dark energy bubbling behind them --

(I'm sorry, father he had time to think, just in case this was real after all, before he was thrown into a blackness he's floated in once before. He's beyond remembering that.)

Thor's heavy body is a limp sprawl atop Spider-Man's. His armor is dulled by blood from the spear-shafts pinning both of them to the ground.