Some of the questions from your studying will be duplicated on the real exam, too, or at least very similar. I wouldn't put too much stock into the scores, though, or worry too much about them, for two reasons: one, there's not enough AICPA released questions to get a really good feel (or at least the way that I had accessed them there weren't many). So, one question that you got wrong on the released questions will make a MUCH bigger difference in your score than 1 question that you get wrong on the real exam! The second and more important reason, though, is because the CPA exam isn't graded as a percentage. Getting a 75 could mean that you got 50% or that you got 90%, depending on the questions you had and on other variables that no one even knows and everyone just guesses at.
To me the more important question would be why did you get wrong the ones that you did? If 25% of the material was completely foreign to you, then I would be worried about an exam in 2 days. However, if 25% of the questions were missed due to stupid errors or were a topic that you weren't quite sure about but are more certain of now, then I wouldn't be as worried.
Not to mention that 2 days is still a LOT of time. It doesn't seem like it when you're looking at the clock tick down, but you can do a lot in 2 days. Make these last days count and you can rock that exam!
(For what it is worth, though, I think I scored around 80% the couple times that I did the released questions things, and my scores were 79, 81, 83, and 91…so most of my scores were about 80's and I think that my times that I did the released questions I was right around or below 80%. Not sure which exams I did the released questions for, though, and not saying that there's necessarily any correlation.)
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