Not sure why people keep spewing up clone, there is only so many things that you can do really...

Level up, kill mobs, do dungeons, kill NMs, do quests, story etc etc.

Yes everything is similar because this is an MMORPG, it's like saying every FPS every is a clone of -insert 1st ever FPS here- (Probs a bad example but you get the point). They are similar because you need to have these aspects in a MMORPG, if you think these aspects make every MMO a WoW clone then just lol at you. Would like to see you play an MMO with all these said points removed, because it wouldn't be very fun at all..