I would guess about the same. I was running ~2:12's in the morning, and decided to bump up to advanced in the afternoon, not sure how much quicker i got, but i felt alot better. I was passing a decent amount in Intermediate, and while I know there were guys running quicker than me, I got passed only once or twice, I decided I would rather get passed by a few guys every couple laps, than fighting with traffic in every turn. IMO in this case being consistent is more important than one blazing hot lap thats quick, you are going to want to hold your line as the faster "advanced" guys are blowing by you.