I'm willing to bet he dogged it at the combine. or he was hurt.
That said, bench press strength isn't shit, 185 was my max when I played, I could do it twice, thats it. That said I was strong enough to play in the post with 4's. Physics have a lot to do with it too. This guy is ripped, he's in shape, he also has 9 foot arms. The bench press exercise is designed for compact frames. Not long armed frames.
Anyhow, who knows.... I watched highlights of this guy and honestly, fuck the tests, he maxes out of the floor where it counts.
James Hardon sucked at the Combine too (man I wanted that guy) and look at him now.... solid as fuck.