I'm a Raiders fan unfortunately, so I say poor Jack lol. It was definitely a clean tackle. He didn't do anything out of the ordinary, Stingley just landed wrong.
Lott and Butkus are a tough comparison. Different eras. It's hard to compare the different eras. But you definitely gotta give Lott props for cutting his damn finger off in a game and going back in the game. I believe it was his pinky, not positive though. Butkus was a tough SOB in his own right and played through many injuries also.