Hi tejas50,
The scoring algorithm on the Official GMAT is far more complicated than most people realize. Since that algorithm is proprietary, no GMAT company has an exact match for it, thus CAT scores can vary a bit based on the 'biases' involved in their respective designs. The most realistic CATs available are the 6 from GMAC, but the CATs from Kaplan,
MGMAT and Veritas are all 'close enough' to the real thing that they will provide you with a relatively realistic score assessment (assuming that you correctly take the CAT in a realistic fashion). The
MGMAT CATs are generally regarded as being a little harder than the Official GMAT; from your message, it sounds as though this is the only timed CAT that you have taken so far - meaning that with just this one 'data point', we have no way of knowing what your actual 'ability level' is right now. For the next week, you should study as you like, then take a NEW, FULL-LENGTH CAT (take the Full CAT, at the same time you plan to take the Official GMAT, in the same section-order, etc.). Once you have that Score, you should post back here and we can discuss the results and how you might best proceed with your studies.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How many hours do you typically study each week?
2) What study materials have you used so far?
Goals:
3) Are you planning to take the At-home GMAT or are you planning to take your GMAT at a Test Facility?
4) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich