So the problem is 'declared' bias - undeclared bias is fine? Because Shukla was the definition of bias when he declared Tamboli the winner of that glass task - Jas was the clear winner there, and no stretch of the imagination justifies his gifting it to Tamboli.
Aside from that - I agree that the seniors should be unbiased and fair - but none of them have consistently been doing that. Gauhar is still better in that respect than the other two, but in any case - they're not about to start now.