Not that LulzSec has made sense up until now but why bother taking out online video games? I feel like that's alienating the population that would normally support or at least be indifferent about a group like LulzSec.
They were taking requests for ddos targets. I don't think they care who they piss off since it is all about the " lulz" to them.
Their claim is to have taken on phone-in DRM that pissed off users -- to the point the users wished the servers to crash and burn. Pretty much similar reasoning to Sony hacks, if you ask me...