Yeah, that's a very good point.   For example, bodybuilder Ronnie Coleman is featured in videos wherein he leg presses 2,300 pounds (1,043 kg) for a full eight repetitions. World record holder Jason Faulkner has leg pressed 1,000 pounds 60 repetitions in 1 minute unequipped.  2300 pounds! I didn't think it was gonna be that high when I checked!