Sure, very strong press ... and especially for an 18-year-old kid. But as has been said, the fucker is gassing it, NO doubt.
I knew of a young guy here in Toronto many years ago who, also at 18/19, reverse pressed something like 500. Bob Kennedy witnessed it and shot pics for MuscleMag.
Years later I met the guy and he stated that he did indeed press the poundage, but at the time he was heavily on the sauce, and having done so much at such a young age, was now fricked up and could barely hit sets of eight with 225. Some older schmoe dude had been feeding him the drugs (and likely his greasy cock, too).
What am I trying to say? A strong kid on the right shit can hoist a lot of weight.