Let's be fair here though, what are we comparing it too exactly?
Prophecies? If we put all the fan love aside, the story wasn't really that great and got extremely tiring once you do it with one character.
Factions? I personally liked it, it was short and fun although I know that's not a popular opinion. I just liked the transition from the peaceful Shing Jea island into the corrupted cityscapes and finally into the Kurzick and Luxon lands.
Nightfall? Ok yeah GW2 sucked compared to this one. Nightfall had an intriguing storyline and got even more so interesting when you entered the shadow realm (or w/e it was called)
Eye of the North? I guess