Because of the fact that the ai is more advanced in 1.0 the player isn't in the first place all the time which allows for more mushrooms to be farmed. Of course the advanced ai has its drawbacks for example it's really easy for the other racers to snipe the player with a shell or a bomb which would lose time but this can be avoided if you get good enough rng. So please if anyone still has a 1.0 copy of BCSK upload it here in this thread.