Um, I am not sure I follow your comment. I never stated anyone could "resist" waterboard, in fact I would say any type of "enahanced interrogation" techniques would be designed so as to negate such resistance. I would, however, argue that nobody that I know who has had it done has "cried" as a result.
The entirety of SERE Training is basically the manual used by the CIA on those 3 detainees, and Tim has endured that course. You cannot control certain neurological responses to particular methods, but you are able to control the panic that can set in, which is the point of the training. Everyone has their breaking point, everyone. For some it comes after being locked in a coffin sized box, for others it comes after waterboarding, for others it might come when their pinned down on the ground by 5 people, while having their nose pulled up with a kubatan, a tiny, yet extremely effective, device that every SERE instructor carries in their pocket.