I hope i can help out with a few things here.
I gave NMAT last year, and cleared it. I had a score of 69, which eventually was the cutoff. That gave me a written rank of 2528:). Now the thing in NMAT is, the weightage to the written score is so much, that if your rank is extremely low, like in my case, it becomes very very difficult to clear the GDPI. I had an excellent GD, and a good PI, and my final rank was around 1400. That did not get me through. So, in NMAT I feel, its not about clearing the cutoff, its about doing so with a good rank, hopefully in the top 600-700.They give out many calls, cuz they charge money for thier GDPI process, it was Rs 950 per candidate. I feel thats the reason for the many calls!!
The weightage of the written test last time was the full 200 marks!1..This time it would be 150. Last time, 15 marks were the weightage for Work ex, and 35 for the overall GDPI process. So, if you have a score of 69 with a rank of 500 odd and u get a call, there will be people who will have a rank of 100 with a score of 100+, and this is an impossible margin to cover up with only 50 marks to play with.
Otherwise, i thought it was a pretty easy paper, and i feel cutoffs would be 75+, but to stand a decent chance u need a score of 85+. 105-110 should really help u in converting that final call.My attempts are somewhre between 120-125, hoping for decent accuracy.
Hope this helped in some way. Cheers.