I do think it's sort of interesting how in one episode Stefan and Caroline were discussing how they all weren't necessarily any better than Klaus. And while you can argue Klaus was certainly worse, it was nonetheless an entirely valid point. For example, you can argue Stefan (supposedly the good brother) murdering Andie in season 3 was just as bad as anything Klaus has done. Stefan wasn't being compelled or anything... and he didn't murder Andie to save the world from evil or anything inherently noble like that. He murdered her JUST to send Damon a message... like Klaus murderering Tylers mom was supposed to send Tyler a message.
Obviously Stefan acts that way far less often, but the point is you can say at his worst he's just as bad as Klaus. Which I guess is good for Klaus if hes getting his own show.