You honestly want to compare Mankind to John Cena? Seriously?
You mean the same way you're comparing guys like Edge and Umaga that Cena has beaten in gimmick matches to a guy like the Rock? Beating Mankind in an I Quit match during his prime is not exactly an easy task.
and what do no dq triple threat matches have to do with a ladder match? Because they don't have many rules? It's a completely different kind of match, bro.
The Rock has been in two ladder matches and won the one that was during his prime so that is very relevant. All a TLC match is, is a ladder match with tables and chairs. During the Rock's era with all the no rule triple threat matches he was in and even normal matches, tables and chairs were common place. There was always someone going through an announce table and getting their ass beat with a chair. Judging by the 99 Rumble it's safe to say The Rock has no trouble repeatedly beating someone over the head with a chair.
The same could be said about Cena. All he has to do is keep the Rock down for a three count. And the Rock lost a street fight against Shane McMahon on Raw once. So I guess that makes this an easy win for Cena, right?
It works both ways, but you saying this is a guaranteed win for Cena is quite the bull shit statement.
This logic is very skewed. A primed Hulk Hogan-like Cena is superior over a primed 50% winning percentage, primed Rock.
The Rock was at his best in 2000 as the top face. He rarely lost then and when he did it was against big name heels due to massive interference. Cena isn't a big name heel and no one is going to interfere on his behalf.