Mickey Mantle = baseball legend. Nutnfancy = youtube poster.
Being a baseball legend = ultra tough to achieve. Posting on youtube =
anyone can do it without effort.
Baseball = major pro sport. Youtube posting =
hobby? random activity?
Finding common links between two people isn't hard to do. Hell, even I signed a couple of autographs after my face was shown on a local tv as they interviewed me after a football game I had played in (hey who knows, maybe those autographs might be worth a lot to someone). Same I guess as, let's say Tom Brady. However that does NOT make me comparable to him.

So your argument is kinda weak if you ask me.