I dont see WoW and GW2 as being mutually exclusive. I think it is possible to enjoy both games. MoP and GW2 are also very different games. GW2 PvE is very good and a lot of fun but it is obvious that everything in GW2 leads to PvP and WvWvW. Being pro-GW2 doesnt mean being anti-WoW or implying that I must ragequit WoW in order to be a true GW2 fan. Enjoy both games for what they are. IMHO MoP is a very good pve game with lots of great content to experience and explore. GW2 is also a great PvE game but the PvE is just a warmup for the real thing that is PvP and WvWvW.
Why cant GW2 and WoW fans just get along?