The Beast is very athletic and quick, but it won’t be enough in this round. Thor is much faster than Beast and if he gets one shot in it’s all over. Thor will get that shot in pretty early. Whether it’s lightning, A quick Mjolnir throw, or a punch, Thor’s speed would make sure that there is no escape for the Beast. Thor wins.
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Beast is smart and resourceful – remember the Phalanx episode! He still has no chance against Thor.
True, Beast is definitely smart. Of course in combat smarts I’d still go with Thor since he’s been fighting for thousands of years.