The real deal is fighting other players. WvW at it's best could be massive team vs team vs team warfare. It might be 1v1 or 2v2, small group action. WvW is incredibly variable, you can even try avoiding other players if you want, running back routes, taking sentries, killing supply dolyaks and taking camps. There is much less pressure than sPvP, and much more variable than fighting purely NPCs in PvE. The big advantage is you can choose how to play, so not everyone will give you the same answer. It's strategy, build and using the right skills at the right time. The ones that die most don't think enough. Unfortunately Anet in it's lack of wisdom didn't balance for WvW, a lot of the skills used now are just activate and run your zerg at the enemy. It's a lot like Jurassic Park. "Your scientists (Devs) were so preoccupied with whether or not they could, they didn't stop to think if they should."