I have another piece of puzzle to add. I can't figure out what may be different after the level 2 cut-scene, but I note that apart from sprite changes there is the "PAULINE EDITION" message and a different copyright message under.
So I waited until it says "PAULINE EDITION" before starting a game then played through to level 3. It de-synced with the dkong rom on the first barrel screen for a total of 300 points. My harebrained (and probably wrong) idea before was that the stream of random numbers used depends in part on the number of instructions parsed by the z80 chip's processor. So I theorise that the mere different text alters the stream of random numbers. Again I reckon it's just a different set of equally random numbers causing the inps to de-sync. I can't imagine any real difference in gameplay. Same % chances to steer barrels, same 25% to get 800 on a blue barrel etc
I have changed my original No vote to a Yes.
If Pauline scores are decided to be accepted on the main DKF leaderboard then I hereby promise to wear full Pauline outfit for the next Aussie Kong Off.