Comeon we are watching the show, not listening to and that makes all the difference in the world. If studying 18 hours can make you an IIT then practicing singing since the age of 4 should as well be. Finding talent is very hard and it should never be based on your performance, it should be based on potential. You don't have to write subject GRE to study a particular subject, its the overall aptitude that matters. Despite of how Ankita is performing on the show, she is the most talented in the lot and I stick to it.
I still feel that Emon is the best amonst guys and if the II3 is a male then it should be him, if its a female than that is Ankita. As far as Amit is concerned, I didn't even realize that he was in the show until now so may be he sang good, got good comments from the judges, I don't know.