Pushkar's dialogues were to the baby and not Pia and he referred to baby and himself paying for Pia's mistakes.
JW's does not feel as strongly for Pia's baby as Pushky does which is very unlike JW, who desired to have a family . He could not have overlooked this baby even durng Bani's pregnancy, all said and done, the baby is his.
JW never felt this strongly for Pia's baby even when Bani was not pregnant, whatever he did, he did as a part of his responsibility towards that child.
May be now creative will come out with some stupid miracle to prove that baby is not JW's
Let me know what you think