WoW doesn't have 7 years of content either. Because of their game design only the content from the most current patch is relevant. GW1 and GW2 however keep all content current. It really was amazing coming back to GW1 to see just how much there was to do. If you quit WoW in vanilla and came back today, you'd power level to cap, do a small amount of heroics, then hit dragon soul LFR and technically be done with all content. WoW is a vacant shell of what it could have been with better design.