How were winners selected?

Given the final results and having seen all the final episodes (prize and focus on winner episodes), I am left with this nagging question as to how the winners were chosen.

It is said multiple times in these episodes that Anitha won the maximum of votes.
Sowmya won the judges' votes (jury award). So how come Nikhil is declared the winner? He was neither selected by the viewers nor the judges. So who selected him. They never categorically answered this in any of these programs. Will we ever know what went on in the final selection process?