I think it is based on members views on each forum. Since on this forum there was lot of resentment on Mauli's selection over Shresta, the author must have given it a thumbs down.
I don't think its based on members' views though.
If that was the case, II3 would not have gotten a thumbs up last week. There was resentment over Suhit getting picked (voted) over both Bhavin and Aisha in the WC round. Think its based on the author's views on each show...the drama, singing, entertainment value etc.