As for Chinese superhuman fighters...depends what you would call "superhuman" I guess. There's the whole Romance of Three Kingdoms with some quite badass fighters in it, such as Guan Yu and Zang Fei...others too.
Superhuman in physical strength.
Superman
Arnold Strong (Arnold Schwarzenegger's screen name in Hercules in New York)
Guys that can lift a lot of weight.
Super strength.
Alright, so do you accept Zang Fei? I believe that's pretty much his deal.
"And the Chinese don't even care about sports."
I think they do care about sports. A lot.
Forget who said what and who did not quote for a moment.
Myths are exaggerations of real stories.
In Western literature
There are men of superhuman strength, Hercules, Samson, Gilgamesh, Beowulf, etc.
Can someone who is Chinese who tells me of men of superhuman strength in Chinese mythologies?
The Monkey King. Oops, that's a monkey.
Well...I'm not Chinese, but two things: I'm not sure I'd call Gilgamesh "Western."
I learned it in school, it's Western.
Your argument is in the form:
premise: "I learned it in school."
conclusion: "It's Western."
If you are going to make the sort of claims that you do, about being so logic and fact driven, and only wanting to be shown if you may be wrong, then you are going to have to do better than that.
But in perspective (not to say in fact), it's called "Middle Eastern" in the West for a reason. It's from a middle ground. And then, it predates the concept of West and East anyway.