^^ as far as boasting about "squatting" 200 thats pretty shit BUT as far as them doing 1/4 ROM squats off a box/bench its more for power, explosive training. A lot of sports training doesnt require as much emphasis on full ROM squatting versus powerful explosive strength in certain areas of the ROM.
Lots of football players train this way, it seems counterproductive to a lifter but there is a purpose behind it as far as specific sports training. Thats not to say that they shouldnt still train full ROM squats as well.