Huge gap in GMATPrep test score and actual GMAT score

Hi All,

I gave practise GMAT tests (under controlled environment, simulating the test conditions) at home and scored following -

GMATPrep 1 - 770 (11 May 2011)
GMATPrep 2 - 750 (9 May 2011)
Manhattan test 6 - 780 (6 May 2011)
Manhattan test 5 - 750 (5 May 2011)
Manhattan test 4 - 710 (29 April 2011)
Manhattan test 3 - 750 (22 April 2011)
Manhattan test 2 - 750 (17 April 2011)


Though some of the questions in these practise tests were reapeat, I did not remember answer of any of the repeat questions except 3-4 questions.

Still when I gave my actual GMAT on this friday ( 13 May 2011) , my score came out to be - 670 (Q49, V32)

I am not able to understand why did I get such a low score despite getting wonderful results in mock tests. I found the verbal section in real GMAT very hard as compared to the Manhattan and GMATPrep tests

I want to know -

A) Is there a mismatch between the difficulty level of the GMATPrep and Manhattan tests and the real GMAT test (specially the verbal section) ? If there is a mismatch, what is the way to cope that mismatch to get a good score in real test ?

B) Can anyone please suggest me what went wrong ? I gave all the mock tests under controlled environment. I gave my 100 % at exam and was not distracted by any external factors (like noise etc.)

C) This was my second attempt on GMAT (670, Q49,V32). First time I scored 640 (Q47, V31). I had full preparation this time and had not left anything to prepare. Now that I don't have the score, I don't know how to react and what action to take. I found RCs and SCs very tough in the real exam. I am thinking about working on these 2 segments and giving GMAT third time in 1 month. Will that be a good move ?

Please help me in figuring about these queries. Any help is much appreciated

Thanks,
Mohit