I thought that at first, but it gets better. I can't really say much else without spoiling it, but yeah. Kirito is pretty OP, though.
6 episodes are enough to tell. While it's true, it had a brilliant first episode. However, it's going down hill.
I'm on episode 17, I think, so at least half the series. Obviously, we are going to get a season 2, but not for a while. Season one might possibly end with the female titan arc.