MGMAT CAT Score Accuracy

First off, I'd like to say that if it wasn't for the MGMAT series I'd be completely lost. Great books, well worth the investment. They explain things in such a precise way, building concepts step-by-step. My learning style is completely in-line with how the books teach. So, for those considering it - just buy the whole set, even if you feel strong in one particular area. Just buy them, IMO the best guide out there.

I've been through all the quant books and SC twice. Decided it was time to try a CAT - to see where I stand.

I started it up last night, got thru the AWA and moved on to the quant section. Now, for reasons unimportant to your guys, I was in a bad mood last night and was having trouble focusing. I got about 25 questions into the quant section before I just exited, skipping the rest of the section. I was getting frustrated and just guessed in order to move on to the next question probably 5 or 6 times. I also was pushing a torrid pace as I had 38 minutes left by question 25 when I bailed.

Tonight I regrouped and polished off the verbal. I stayed focused and was more in the zone tonight. However, I still finished 25 minutes early. I had the same problem with blitzing through the test on the LSAT (I swear if that test had 30 minute sections not 35 I'd be 99 percentile, but I digress)

So after blowing the quant and working out some obvious sticking points in verbal I didn't know what to expect score-wise. I got a 570. Nothing to write home about but all things considered a decent starting score for my first full prep test.

But given what happened can I still count on this socre as relaible? IS MGMAT a reliable indicator of real test scoring?