Mocks score doesn't matter much!

So there is guy in our dlp Allen program, ( no this is not that jealousy kind of post) so we went to give mocks on cbt centers , he's mock score have difference of 30 or 40 marks from me not that much, and before jee mains we have AIOT (All india open test) of Allen everybody know about it, so our scores was like this , left side mine ( yep pretty bad) right side his (ok, but not that good) and today I met him bcs due to cbt test and guess what is his results of jee mains 1 any guess?? 99.8 some percentile. yep you hear it right , we had same where I fumbled badly at 89 %ile , I asked what he did before mains, he told me he stopped giving test and did revision and question practice only, so yep mock score doesn't matter, its your D day temperament , luck, and your revision matters.