User blog comment:Blaziken rjcf/Some calculations about Sam being in Lucifer's cage/@comment-3481504-20140603222438

As I've already said, I highly doubt demon transformation, at least in the formulaic sense, can occur in the cage. Length of time doesn't dismantle this. I have no concept on the exact time figure, but I'll go with you on it. Torture in Hell naturally figures someone into a demon, it's not like a some choice of the torturer whether to turn them into a demon. Dean's absolutely powns in anything combat-related, but yes, I think Sam has a stronger willpower than Dean. I think it's been mentioned at least once that Sam is the righteous one. Not sure what episode, though. Now, Sam couldn't have withstood 5,040 to 10,080 years in Hell without becoming a demon. No one could resist that long.