Yes, GW2 has only been out for 10 days or whatever and WoW has been around for like 8 years. Regardless, comparing the amount of "end game" in GW2 to Vanilla WoW is pointless, because GW2 is most likely going to be compared to WoW (and other MMO's) in their current state. Not the state they were in 8 years ago. Maybe that isn't fair, but it's true. Furthermore, most (subjective perspective time) current WoW players aren't considering end game content from previous expansions to be current end game content, so I wouldn't use that as rationale that GW2 has more of said content (what ever the hell "end game" even really consists of from game to game). I'd say both have about the same amount to do, but I haven't really dug into GW2 yet (just got the chance to play a beta weekend for being a Curse preemie member).
On another note, if I could get my hands on a copy of GW2 I'd buy it.