(Spoilers Extended) What do you think would happen if Ramsey captures Stannis?

Let's assume Stannis looses the Battle of Ice and is taken by Ramsay. Do you think he would be able to make another Reek out of Stannis? I think Stannis is a lot more mentally strong than Theon and he'd rather starve himself or something but it's an interesting situation to ponder over. Let's even forget Stannis, how would Jaime, Jon, Tyrion, Davos react when subjected to the level of torture Theon endured at the hands of Ramsay?(in a hypothetical scenario where Ramsay is free to torture them as much as he wants to fulfill his sadism and obliges himself) Would they all eventually break down or stay defiant?