As you stated the two scenarios were different here, I would like to add that the two scenes were totally in different context.
For Asad it was his realization of depth of love he has for Zoya, he was always denying his feelings for Zoya but this situation brought out all his emotions, so it was intense and beautifully acted by KSG.
For Ahil it was humanity and moral responsibility of helping out a the girl that too the girl who is a part of his house, when he was the hope of that girl to save her life. It's only after mouth to mouth CPR, he looked confused, shocked, he kept staring at Sanam. KVB's acting was wonderful which actually gave out exactly Ahil's feelings. He was so subtle and natural.
Asad had tears of realization, guilt and desperation of losing Zoya forever.
Ahil had perspiration due to frustration and helplessness of not being able to save the girl who trusted him to save her life.
For AsYa it was the realization of love, turning point of a love story, for SaHil it's the beginning of a love story.
The two scenes context was entirely different though set up was similar.
And all 3 actors portrayed the scenes wonderfully.