I wouldnt say much more, it really depends on the game. Last time I played FFC I ended up hitting the end boss 300 times without getting hit. Certainly a case of my abilities overshadowing my characters. However, this isnt a typical thing either. Most people would die either from the boss or of boredom long before that..
Actually it's more when you trigger those abilities, which is entirely down to the player. Even with the same character people will have a different gameplay experience.KOTORs a very simple game anyway. The more complex the game the more the player becomes a factor whether the game is reflex based or rules based.