The Karate Kid is a powerful fighter who uses his super superhuman speed and top notch hand to hand skills to break his opponent. That’s not a great matchup against a sword user like Winter though. Additionally she also has her summons on hand to give him a tough time. Karate Kid won’t be able to match her speed and while his fists should be able to handle her summons, he will not be able to fend off all attacks at once. Winter wins.