This is most definitely false.

Sure, the PS3 *could* handle WoW if you can get Linux with Wine working on it, but there's no way it'll be faster at 5-boxing than most new quad cores, especially the i7 series. You're talking about a 4+ year old CPU with 7 small and somewhat fast cores versus a new (and smaller = better) quad core architecture supporting 8 threads with a hell of a lot more system memory and faster hard drive access. Remember, a PS3 uses a laptop hard drive, so that's already one upgrade you'd need to do to not lag like hell when you enter Dalaran. Don't even get me started on the differences between the PS3's graphics system and modern videocards. The PS3 is designed to operate around 30-60fps at 1920x1080, but most games are limited down to 1366x720. This is chump change for all the newer computer videocards.