The Rock or John Cena

I love the Rock, but Cena.
Rock had a hell of a career, but Cena accomplished more.

Cena.

Fifteen world championships to Rock's ten.
Twenty-two championship reigns in general to Rock's seventeen.
Some really bloody good matches against CM Punk to Rock's absolutely no good matches against CM Punk ever.
Two Royal Rumble wins to Rock's one.
Brought it via actually being there.
In WWE longer than Rock.

Rock's had a better film career though.

Cena I have to say by a little.

But I will say Cena is a big fish in a tiny pool of water with little fish. While Rock was big shark in a ocean full of sharks.

It all just depends on your definition of "better". The Rock was (and may still be) far more popular in wrestling, an achievement that Cena won't hit because of the era he's in, etc. However, Cena has definitely accomplished more and has had a far better list of matches to his credit.

Cena, mainly because he was given so many title reigns in such a short time span.

It's not like The Rock wasn't pushed fast, though. He had something like seven WWF title wins in the space of four years.

And all of his WWE title runs weren't long at all. I think the longest one he actually had was in the summer of 2000.

In his era tho They played hot potato with the world title and other titles. Not as badly as WCW was doing but still.

I prefer The Rock, but Cena.