How many times have you heard a coach yell something along the lines of "Go out and kill them"? Do you think that means "Hit them hard, but not to hard not injure them!" or "Watch out, don't get near that guy's knees, he has a history of ACL problems!". If a player has a weakness, you are going to try and exploit it. If a RB has a bad hand, you are going to do everything to hit that hand.
I do have a problem with purposely trying to twist ankles, and just the overall creepy tone of William's speech. No wonder why they lost, that speech sounded about as inspiring as a Ron Paul speech.
Weak, weak, weak. He was talking about intentionally trying to injure players. You are trying to argue for hard hits. No one here disputes that. But this guy was clearly asking/demanding something else.
Stop comparing the two as you know that is BS.