If you're looking for population, yes this game has a large community.
Ryoto is pretty correct in saying it's a pretty p2w game. If you just rely on Daily quests for Astral Diamonds, it'll take you a long time to reach what people can just buy easily.
Game is fun though. I spent some fg for a mount just cause movement speed is nice to go around in Neverwinter. Besides that, I got all my gear myself. ^-^
Imo, worth playing. I never got Gw2. Only played a little on my friend's account. Both really fun games
