After further review and several full screen replays of the video... the footage is bogus. Sorry. I made a few comments earlier and now when I watch the viedo, I see a few more problems.
#1 The bar is stopped the same distance from the pins each rep (1/2 -3/4") Why? because 500 lbs hitting the pins makes a very different noise than 185 lbs hitting the pins.
you can hear the bar hitting the pins/rack . . . it makes very little noise, like he's just touching with an unweighted bar.
#2 Because of the way he is sitting, the weight would be pushing him down and forward in that seat. His entire body is
absolutely stable, that would not happen even if
he weight 350 lbs and his feet were braced.
Huge dude... Nice video... but it ain't real.
His feet seem braced, for what it's worth. i also feel like I can see changes in the bar speed, but that's just me.
I would like to see more footage before I make up my mind. right now, all I know is that he's a huge dude . . .