What version of Superman II have you seen?
I can't stop shaking my head at how painfully awkward this is.
I didn't find that part awkward at all. Okay, Superman lifting Zod up looks a bit fake, but I don't care because the scene is so fun. I love the exasperation in Zod's voice when he says,
"FINALLY" after spending the whole movie rambling on and on about how much he wants Superman to kneel before him, and the wacky sound he makes when Superman crushes his hand is hilarious.
I assume you're asking me if I've seen "The Donner Cut" when you ask me which version I've seen? I've only seen the movie on TV and on DVD. I don't know if those two versions are exactly the same, because I heard something about an 'extended version' being on TV once.
Another thing about
"Superman II" and
"Superman Returns" I want to mention is how one of the virtues of the former is how well it works as a family movie. My parents watched it not long ago and were surprised when I told them how much I love it because my mom thought it was obviously "for children". My dad kind of mockingly said,
"Don't you know he's a child?".
I watched
"Superman Returns" with some cousins as a family outing and when it was over, none of them had much of anything to say, except that the guy playing Superman was handsome. In fact, that's the only discussion I've ever heard about it (outside of the Internet).
I was with a group of people in the summer of 2006 and since I love talking about movies, I was excited when someone brought
"Superman Returns" up. In the end, however, there wasn't much conversation beyond some of the girls agreeing about how hot Brandon Routh was

.
One of my cousins did also say she thought Superman's vulnerability (being rejected by Lois, going to the hospital, etc.) made the movie feel 'more human' than
"Superman II", but that's faint praise at best and as far as I'm concerned, a bit of a stretch.