I think it will be fine. Tera is a very pretty game and the outfits are nice. Not sure I would call it armour since it really doesnt cover much of them. Other than that, I didnt enjoy the game mechanics all that much. I'm sure i would get used to the aiming. I have a beta key for this weekend and I will try it again, but I dont think its for me.
Guild Wars 2, who knows. It's a B2P game w/ a shop. I can't say I am crazy about shops and by reading a thread the other day on this forum, I believe many people do not like transaction shops. GW2 promises that it will not be a B2W game and I hope they keep their promise on that. I will try GW2, but I can't see it being my main game. It's something I would play when I am bored, like GWs was.