Kurse is a pretty powerful Thor villain who surpassed him in power. He became about 4X stronger than Thor. That’s a lot of power, but Thor isn’t just about physical power. He has his Mighty Mjolnir, with that hammer he can blast Kurse from a distance. As long as he spams his thunder he should be just fine. Thor wins.
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Outside of battling the Hulk, this should be Thor’s biggest contest. Though Thor would win, it would not be easy by any stretch of the imagination.
Yeah, in the end Thor has better all around skills