Coming from someone who mains the three highest tier characters lol... So glad they all got nerfed.
I just don't see how a rushdown character who has plenty of holes in his game is more annoying then Grandmaster Turtle Sub, Inferno Vortex Scorpion, Quan Cheese, or Full Auto Spam Jackie. Sonia's mixups are equally hard to deal with and Ermac always seems to annoy me a little. A good Johnny Cage, Devorah, and other characters seem to have comparable block strings to Jax.
I don't mind Quan (even pre patch). I hope they take away inferno scorpion's wakeup teleport. Sure his vortex is punishable, but he has a get out of jail free card on wakeup, so he can afford to take vortex risk all the time and not face the consequences of other vortex characters (Quan cheese has to deal with wakeup pressure over and over, which justifies his amazing vortex).