The truth is that no, Jake is not better than any random Na'vi at anything. I try to avoid bashing something I haven't seen past "I don't like the premise/genre/author/what I've heard of the plot" and if I
was to discuss it, I'd make sure I did my research in a more in-depth manner than wikipedia - even if I don't get every detail of the worldbuilding, understanding basic plot points isn't unreasonable.
That said, maybe I do take things like the link in the OP too seriously. After all, what people think doesn't affect me; that was the entire reason stopped reading tvtropes after all, because they were causing me too much stress and aggravation with their worthless views. I should be more careful with similar people elsewhere, including the link in the OP.