Lance is old news. A fraud? Yes, but he's done some good with his earnings, so I don't entirely think the guy is an asshole worth beating way after the fact. It's over and done with already. I doubt he was the only one doping either.
It's kinda ironic considering almost every active wrestler in WWE has used steroids, including the man he's doing business with right now. If WWE had any balls they would make Punk vs Rock a lot more interesting by adding a straight edge vs steroids angle, there's a reason Rock is twice his size right now and its not because he's training harder, one of them is injecting test and the other isn't.
The same uninformed people who always claims every guy with slightly above average muscles is on roids. . .are doing it again it seems. You do this every few of weeks with a different wrestler dude.
The Rock is nearly half a foot taller than Punk with a much larger natural body frame. He would look noticeably bigger even if he didn't work out at all. And yes, if you work out a lot, you gain muscle mass even if you don't use roids. If you don't work out much at all, you don't gain muscle mass. This is why the two people look so different, not because of roids. Apparently this is still news to you though.
Lastly, there's no way The Rock would allow a steroid angle like that. Completely destroy his image for no reason? Awful, unrealistic idea.