I think Santorum lost, but so did Huntsman. This was his opportunity to get himself in contention in NH, but he was boring and got tagged as an Obama administration member, a Chinese butt-kisser, and "soft on defense".
For the little face time, I think he won, but I do not think it will be enough to win over voters. I would not be surprised, however, if the media tries to spin the Huntsman surge though.