Which training is harder? SEALs or PJ's?

Which Spec ops group has the hardest training in terms of physical aspects? Navy SEALs or Air Force Para-rescue Jumpers? Who has a tougher water confidence course as well as physical training? I'm watching this new discovery channel show called surviving the cut,and if im not delusional, it almost seems like the PJ's training looks more brutal than BUD/S. I have also watched a multi part doentary on BUD/S on the military channel. I'm of course going only on what I've seen on these two shows so is this true?