I don't think it'll be entirely accurate, but it's the best thing you can get to gauge your readiness.
For one, some sections (eg: Chemistry) had way too little focus on the organic stuff. Even if there were any questions on orgo, they were much too straightforward.
Another is doing it on the computer vs doing it on paper. There is a tremendous difference there, especially in the reading section where on the computer it drains you a lot of time if you feel like you need to go back to a previous question since you'll be constantly tapping away at that back button.
I just went back to look at my score report for my practice tests..
For PT#2, verbal was projected at 70-90%, bio at 75-90%, chem at 80-99, reading at 55-75, and quantitative at 80-99 (PT#1 I didn't really try to simulate the real test conditions so I don't really care about those results). Verbal was the most accurate for me as I scored 82% on that section on the real thing, right in the middle of that bracket in the practice. Bio I scored right at 90, chem I scored lower at 78 and like I said, the easier chem stuff on these PTs definitely reflected in my score difference. Reading I did much, much better on the real PCAT at 83, because of reasons I mentioned above. Quantitative was accurate; though I did have the same problems as the practice with regards to running out of time. I'm surprised, I guessed 5 or so questions on the real PCAT and I managed a 94%.
