If Thor notices this spiderling having second thoughts, he doesn't comment on it. Who wouldn't be a little nervous about sparring with the god of thunder? But there's no reason to truly fear, is there? Surely this can only go well!

He arches his brows in interest at the child's other powers - if the other Spider-Man has those abilities, he's certainly never said. The last one gives him pause, though, remembering the very unpleasant neurotoxin that the Sakaarian obedience disk had zapped him with on several occasions. "Venom? What kind of venom?"

Hmm. Physically strong or not, Thor might be at a slight disadvantage if he's not using his own magic. "How well can you withstand a little lightning?" He might be joking. Maybe.