Dont' want to be rude, but
MGMAT CAT compared with GMATprep means nothing. Performance on the test day will be much closer to the GP, I am speaking from personal experience: 2 days before my 2nd attempt I have done GP and scored 590 (Q42 V29) and
MGMAT scored 700 (Q49 V37). My actual exam score was 610 (Q42 V31), I was surprised how though was verbal on GP and hoped that it is not representative of a real deal. Unfortunately, it was...
I think that
MGMAT has some scoring problems, besides unrepresentative difficulty level of math and poorly written verbal. Similarly as Kaplan and PR,
MGMAT tends to "compress" scores. What does that mean? However much you are truying to improve and no matter what you do, CAT will consistently giving you some average score of 600 - 700 (unless you are Hjort or some other legend of test taking
).
I beleive that CAT's of 3 companies that I mentioned are somehow unfinished, they don't even have some sophisticated scoring system. Instead, CAT is altering the level of questions untill it finds some level that you fit in, after that it puts you in some kind of bracket (600-650 or 650-700) and randomly pulls the "final score", for example: if you are in 550-600 bracket it will randomly pull scores 570, 590 or 550. Of course, even the ability of the CAT to put you in a proper bracket is questionable, not to mention the final outcome.
Of course this is just an oppinion of total IT amateur. That is just my observation of the results and conclusion based on nothing more than that observation. I have not a single one evidence to support this conclusion.
The purpose of my writting is not to dicourage you. You should study hard, sit for an exam and then move on to the next step. It is a simple algorithm: either you are satisfied with score or study hard again and sit for an exam again. ManhattanGMAT instructors claim that approximately 3 months of studying is neceserry for the 50 point score increase. According to my experience, they are very, very, very close.
Of course, some greater discrepancies between GP and a real deal are viable, especially on the 450-600 level. Lets hope this (positive) discrepancy shall be in your favour. Wish you best luck.
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