Hi ino810,
Since you've just listed the Overall Scores, I have a few questions about these CATs:
1) What were the Quant and Verbal Scaled Scores on each of these CATs?
2) Did you take the ENTIRE CAT each time (including the Essay and IR sections)?
3) Have you taken any of the GMAC CATs (and if so, then how did you score)?
4) Did you take your CATs at a consistent time of day?
5) Did you take any of these CATs more than once?
GMAC has publicly stated that the score that you earn on your Official GMAT is within +-30 points of actual ability. Assuming a similar 'swing' in your practice CAT scores, you're scoring right around 700 (+-30 points) in most cases. Keep in mind that the accuracy of CAT results depends heavily on how YOU choose to take the CATs. The more realistic and 'test-like' you make those experiences, the more likely the score results are to be accurate. If you deviate from the standard Test Day 'event' (skipping sections, pausing the CAT, taking it at home, taking it at a different time of day from your Official Test time, etc.), your scores can deviate too.
GMAT assassins aren't born, they're made,
Rich