You know, in regards to throws, I actually kind of like how they're used in this game. The above examples you cited, Dr Dogg with Tekken, SC, SF etc. are all prime examples of why I think this system is so much better. The throw is virtually useless to me if it can't be used almost as often as you would any other kind of attack. The occasional teching that you get in MK9's 50/50 isn't too bad overall I think. I haven't really seen basic throws have much use since Third Strike, and that was only because of kara-throwing that they were even that effective. Command throws don't count here because MK doesn't have any other than Cyrax's nerfed b+1 (Not counting Jax's or Kano's since those are X-Ray specials).
How does this pertain to Jax, specifically? It's simple, the throw is one of his best and most unpredictable moves. When I played THTB's Jax at Summer Slam, one of his most effective tactics other than the low block strings he'd use after I got knocked down was his five-hit throw string. Given that Jax has constant pressure, but no real mid-screen game to speak of, that 13% five hit throw string might not seem like much at first, but when it comes down to the wire it's all that much more important to finish your opponent off for good.