This is a singing competition, not a therapy centre so the better one wins; The decision should not be based on the ground that by giving the win to Lingling, it would uplift her out of her depression and mental struggle. I felt that Hanhong should not show bias towards her, her empathy towards Lingling was misplaced on this platform.
The 3rd singer sells on sex appeal. Bao has the better voice. So Jam chose the 3rd singer for practical reason - to win the competition over the other 3 teachers. He was struggling with his decision because professionally he knew Bao was the better singer.