Okay so Larian has decided to modify the D&D rules to make missing less frequent. To do so they lowered the armor class of enemies but buffed their hit points. Okay fine -- so martial types are more likely to get a satisfying "clunk" when they swing at something.
Unfortunately, this also nerfs casters. Fireball won't be the crowd clearer that it's meant to be. If the goblin party followed the monster manual stats, most of the goblins would die in a fireball and the fighters would finish off the remaining bugbears and trolls. Now, fireball will only weaken the goblins. This lowers the power of casters considerably.
