You didn't provide any evidence about Bo Jackson. You told me to "go check myself". So do the same. Also, the amount of sports you can play at a professional level, for the context of this discussion, is an important measure of ability. Look at the follow-up post by the OP explaining why success in America for American sports should not be the measuring stick. You conveniently ignore this in your quest to always be right.
Another thing i don't understand is why you have to be so dismissive and aggressive about everything. You seem to not understand the fact that you can, in fact, be wrong about something. Like in this instance where you're clearly wrong, everyone's telling you you're wrong, but apparently we're all stupid and you're a prodigy of sports analysis. Good times.