My fiancé currently prefers WAR over DDO because DDO got hard.
I prefer DDO over WAR because DDO is an enjoyable challenge rather than the insta-win that is general MMO PvE.
I consider myself an MMO gamer; she is the casual player playing with me to play something. EVE is hard, 300k users. WoW is easy, 5 million users. Just sayin’…
I know, beyond oversimplified, but still telling IMO.