My opinion is that the ranger probably had an edge: I just need to think of the biggest menaces I faced, and I'm pretty sure it was the rangers across both versions of the game. It does help to find a guide to good builds though, actually having an idea what I was doing made an enormous difference to reasonably pain-free progress compared to getting pwned all the time!
Though ultimately I went for a sort of mixed build of both warrior and ranger: although a risk of jack-of-all-trades-and-master-of-none, I liked the flexibility of being able to have a couple of different approaches to any given situation.
