Quote princesscandy: I think that Jason is totally into to Liz and is going to end up hurting Sam in the long run. We saw who she chose and the was Liz.
You cant say "we saw who he chose"
This question is going to be complete speculation by every fan Jasam or Liason, no matter what either fan base thinks, we will NEVER know because Jason gave Sam the nod to get out of the building therefore, he didn't have to choose between the two of them.
IMO, I think that if Jason would have chose Liz it doesn't automatically make everyone think he chose her because he loves her more. He would have chose her because she was pregnant and had been having pains, she needed someones help. Sam is more than willing to take care of herself.
But the the point is WE WILL NEVER KNOW...