And the difference is? Here is the point you keep missing: whether bad design, bug or omission, this combined with the bad AI and even worse pathfinding is what made BG2 an easy game.
Not really, no, a creature out of hundreds being vulnerable to an obscure spell that most people wouldnt even think of using against them didnt make the game easier. If thats what your argument comes down to, then you have no argument.
That is also why Kangaxx being a one-trick pony was a problem.
Why was it a problem tho? it was just one fight, a very memorable and tough one at that, else you wouldnt bring it up. Your own speshul tactic to easily beat him does not make it an easy fight. Its not fucking rocket science you retard, your metagame knowledge of the game is irrelevant why do you keep bringing it up?