Very insightful. And I agree. And, I'd like to expand on that a bit.
I've always had a theory about Mario. I think he was one of those kids who was big, and showed some athletic talent. As a result, everyone told him, "You should play sports! You should play football!" (I've seen that scenario happen before). As a result of that, he just kind of "gave in" and decided to start playing sports, even though he wasn't really passionate about it. I think he kept going, all through college, and would have an occasional good play here and there, and got him attention. Given his sheer physical size, he can't be ignored, so, when he DID have the rare great play, it was over-hyped.
Mario doesn't have the heart for football. He just "fell into it." That's my theory. I have absolutely no proof, of course; that's just my two cent estimation based on his demeanor and his play. The guy is locked into a career that he doesn't like. Granted, he is paid very well, but, still. He's not into football. It shows.