1. He wins, casually. Superior command of the Force.
2. He wins, casually. Superior command of the Force.
3. He wins, casually. Superior command of the Force.
4. He wins, albeit with moderately more difficulty than the earlier three, since Darth Malak's mastery of the Force surpasses the likes of Kenobi and Jinn. Still, nothing particularly strenuous.
5. He wins, casually. Superior command of the Force.
6. This requires some thought. Maul was highly regarded even on a historical spectrum in terms of training, stamina, and skill as a Sith apprentice. Given his stamina, I'd say that he wouldn't be hurled aside with ease -- but his powers still pale in comparison to Marek's.
7. He wins, casually. Superior command of the Force.
8. He would win this with some considerable difficulty. There can be no question that Darth Revan is a prodigious master of the Force, though, to my knowledge, he hasn't demonstrated Force powers that are as ferocious and 'unleashed' (pun intended) as Starkiller's. It would be close, I'd imagine.
9. As with the above, Count Dooku is a prodigious master of the Force, though his research hasn't been as scholarly as Darth Revan. He is also, however, a highly seasoned duelist and demonstrates more efficiency and proficiency with telekinesis and multi-tasking than most Force users. He'd give Starkiller hell, I'd imagine, but his powers are simply not as destructive or as unleashed.
10. No idea here. On paper, I doubt Kun's natural Force aptitude compares. But he does have amulets, yes? I'll leave this to Lightsnake or Nai.
11. He wins, but I'm hesitant to say casually. Marek does, however, possesses the superior command of the Force.
12. He would probably win. As with some other combatants here, he'd be doomed in a lightsaber arena, but Vaapad won't protect Mace from everything and his command of the Force simply does not register next to Marek's.
13. I'll leave this to Lightsnake. I haven't read RoT, though Bane is a beast.
14. The official databank says that Marek was "ultimately no match for the powers of Darth Sidious" and when he united himself with the Force and unleashed an explosion that "shattered the Emperor's tower," disintegrated stormtroopers, and caused massive visual damage to the hull of the Death Star -- Palpatine survived without injury. The Emperor quite handily Force-spanks Marek.