The lightning strike that hits Peter gives him a great shock. There is so much power. So much intensity. And for a brief second, Peter sees only the bright light of the flash of lightning.

He is caught by that second bolt of lightning, since he was still making sense of the first strike. And he falls to his knees for a second. He can feel the electricity run through his body. It is only because of his metabolism.... that he is able to shake off the sensation and get back up.

"Fuck..." Yah. He needs to figure out how to deal with that lightning to beat this man. A little smoke is radiating off his body, from being hit by the electricity.

There is a part of him that needs to prove to himself he can handle this. That he can challenge a stronger opponent and figure out a way to win.

He has his speed. And he rushes forward again, using the momentum to run up Thor's body, and attempt to deliver a mighty slam on the other man's head.