Hahaha, damn, and these guys juice? lol. 25 reps with 2 plates hahaha.
i agree, for their development its extremely weak.
one thing to take into consideration tho is that these guys probably arent doing any sets above 10-15 reps in any of their workouts though, so even though frank probably maxes out around 450-500, his muscles arent conditioned at all to lift for extended periods of time (high reps).
with a couple weeks of training specifically geared towards rep capacity these guys would be able to increase reps by 150-200%, assuming they havent done any kind of training like this for quite some time.