I'm not sure about that. Perhaps Adnan Sami would be a better judge...he is definitely very talented. I believe Shaan might fall into the same category. He is a wonderful singer, has composed some of the music for his albums, and writes lyrics for all of the songs in his albums.
As far as the current judges go, I feel that JA is generally the fairest. AM might be the most fit to judge a music competition since he is a music director, but he is very rude and inconsiderate towards the opinions of the other judges. Overall, I think they all could be better though. No body has stood out as an outstanding judge.