I'm a bit more biased against Ryback than you but you hit right on the money when you make the comparison Ryback vs Lesnar to Miz vs Rock.
I watched some old Lesnar footage yesterday, from when he was new in the company and therefor also pretty green. Man, that was a completely different beast than Ryback is now (and, to be fair, to pretty much anyone in wrestling ever). When he lifted guys he did it so effortlessly that they almost was thrown away instead of staying on his shoulders. He threw around guys like Rikishi was easier than Ryback throws smaller guys (and I'm not even counting failing to lift Heyman and so on). Combined with the realistic aura he's gotten from the UFC he would make Ryback look bad, even if Ryback was going over.
I generally thing big guys are less interesting because they can't move well, get tired and all that. Watching Lesnar made me really miss him because he changed everything about that.
I don't really get your point here tbh. You're talking about ASSISTED MOVES here, I was just referring to the actual strength difference between Lesnar, a legit freak, to Ryback, a strong guy...but not quite Lesnar material. It's far more than just strength in weightlifting terms that matters, Lesnar was a 2 times NCAA champion and he gave the aura in the ring that he was a legit badass aswell since he has huge amateur wrestling achievements. Ryback never did anything in combat sports and hence why he can't reproduce the aura of a legit badass, but make no mistake, strength =/ badass cause if that were so, Rob Terry would be the 2nd biggerst badass in all of wrestling next to Mark Henry, as he can lift more than Lesnar in his prime ever could, yet I think nobody would ever consider him more badass than Lesnar, and for a good reason.
I'm not saying strength isn't important, because it is, but when it comes to powerwrestlers, strength + charisma + presence > all. Ryback, while beeing strong to modern day wrestlers has only the charisma department in check, and his aura fades because he just can't keep up with the strength feats of the wrestlers in the past, nor is he a legit badass who did martial arts training.