Is a good impact wrench stronger then a medium strength man with a 24" breaker bar? I would guess a 2 foot bar that I can lean on with 200 lbs would be 400 lbs of torque. I assume I could get it somehwat higher by jumping on it. What I really wondering is would an impact gun help me get these rusted nuts off my boat trailer if I cant get them off with breaker bar.