Prometheus is certainly no pushover, and Thor would be disappointed if he was. A fight that challenges his brain as well as his body is better than exercising muscle memory alone, and without weapons or equal footing, he's forced to pay attention to try to gain the upper hand.

He lets out a startled yelp when the leg he's gripping suddenly rises and slams down, a hefty jolt more jarring than an earthquake. One hand slips off, his godforged fingers still clinging to the greaves strap as he's tossed around like a toy, momentum and gravity slamming him against Prometheus's leg, and bouncing him off.

It's a terrible strategic position to be in, unable to get a grip with his other hand with all the shaking, but you might not know it from what he calls up to Prometheus. "You'll have to try harder than that!" A friendly boast, more to hype himself up than infuriate his opponent.