I think many people don't understand the point of the scenes in Superman II - either version - where Clark encounters a bully in a diner.
The point of the scenes is to show that Clark is supposed to be Superman to right wrongs. Clark instinctively tries to do it the first time he encounters the bully, but the guy kicks his ass. This is a big alert to Clark, "You're not Superman anymore, you can't do what you're supposed to." (As Jor-El tells him in the Donner cut, he has a mission and he should stick to it.)
When Clark, with his powers back, returns to the diner, it's not for revenge. It's because the bully has always needed a comeuppance, and Clark couldn't do it the first time. Look at the way the bully treats the staff - the guy is a thug, and has obviously attacked many people like he did Clark. Finally he gets what he deserves.
That's why the scenes are in both Lester and Donner cuts, regardless of the turning-back-time thing in Donner's. It's not about revenge.