You're misinterpreting the numbers. Back when he first committed, he was repping 215 easily, as he is 300 now. His max (one rep) was above 300 IIRC. It isn't that difficult to bring your max up that high in 2 years, same with reps. I recently started getting back in the gym for serious lifting for the first time in years, and in 2 months added 50 lbs to my max and 25 pounds to my rep weight. Whey protein helps a lot too, and is cheap and legal. Every time we see a big kid now people assume he's juicing, which is sad.