To wrap this up... after scoring between 670 and 690 in Manhattan review (as mentioned above), I scored 740 on Kaplan and 740 in the OG Practice Test.
Hence I was pretty confident. On the test day however, I had a really bad day and totally lost my concentration towards the end. I scored a 680 but the problem was not the Quant as I was always told by
MGMAT (Q:49, V:34). So the Quant part was much more accurately predicted by Kaplan than by
MGMAT.
I studied some verbal, which I hadn't done so far. Did one more Kaplan practice test before the second try and scored 750.
Ended up getting a 760 (q 50, v44), so I can definitely say that the Kaplan tests are pretty accurate at the moment. While my
MGMAT practice test before the second exam said 700.
has screwed there scoring algorithm after 29Aug...