Saving throws and attributes.
IWD2 has a different ruleset than BG, where saving throws get a bonus corresponding to certain stats (Will->Wisdom etc.), but just to be clear, nothing like that exists in BG, right? Besides some racial bonuses from Constitution that the short races receive, there are no other bonuses beyond from items and the natural progression from level-ups, correct?
A level 20 Human Thief would still have the same saves as a level 20... say, Half-Elf Thief, even though their attributes were radically different, right?