what match were you watching the previous 2 years? Cena didn't carry The Rock they were equally as bad as each other. The Rock clearly wasn't in "wrestling shape" he would be more then physically able to go but to put on a 30min match infront of a countless 10's of thousands of people in attendance when you've only been in ring a few times in 7 years would take a miracle worker. So what was Cena's excuse? he had been wrestling full time for over a decade at that point and still stunk.
this is all opinion...i actually liked those matches. I love seeing to greats face off. The one at WM28. Was better imo but I honestly dont see why people thought they were so bad.