Analyzing & Interpreting literature pre-tests - REA v Petersons - Need answer soon

[xiguassux]

I'm taking the A&I lit test on Wednesday morning but have some concerns about my scores on the pre-tests.

I've taken the 3 Petersons ones and have gotten a scaled score of 64, 57 & 66... which I feel good about.

However, on the two REA ones I've taken I only recieved 54 and 50.... I found these tests to be much harder and guessed at a lot.

For those who have taken these before or have exposure to them... do you agree with the REA being harder? I've heard the actual CLEP is closer to the Petersons versions but potentially easier... or are they closer to the REA versions and I'm in trouble?

Thanks!!!