it is my personal view that ur performance in iit will be around average of ur performance in these sit down tests if u take each of these tests as real iit jee exam. i have also in jee scored around the same marks on an average of 175-200 which i used to get in jee brilliant mock tests.

my percentile used to be around 70 -85 %.least being 68 nad highest 84.But according to our sir if u can manage to get consistently ur percentile in the range above 90.u can definitely expect a seat in jee.what will matter is your consistence .since it is percentile system u need not think of marks as percentile is relative and if the paper is tough it is tough for all.but then too u should to get rank under 2000 try to get above 250 marks in these tests.as an advice i would like to say that please DONT GET MARKS n percentile IN MY RANGE coz in that range u will get in either get rank in eml or get some rank between 5000-10000 which is of no use as u cant get any of the good courses in good iits.TAKE THE TESTS SERIOUSLY AS A REAL JEE EXAM N TRY TO GIVE UR BEST AS THEN ONLY CAN THESE MOCK TESTS REALLY HELP U TO IMPROVE AND PROVE AS YOUR RANK PREDICTOR.......