Dont get me wrong, that is a mountain of a man, but my only point of reference on 400 pound men are guys like Carlos Lozano and Terrence Cody. Both of those guys had enormous bulges everywhere. This kid looks like he has a big frame, and lots of muscle. Not much fat on this kid. I know, i know, Muscle is heavier than fat, but does that look like a 400 pound man to you? I'd peg him around 330.
https://twitter.com/BYUCougars/status/563007838050873347
/photo/1