The only problem with people saying spells can own him is what if your team only has 1 nuke/stun. Sure if you were playing with a group of 5 people this won't happen, but what if your team consists of like yi, tryndamere, cho'gath, annie, and ashe. Nothin there is going to help well. The problem is only certain heroes can counter him. He is not OP if your team has the right heroes. But if your team doesn't, it seems like there's no way unless their jax sucks.
And only Tryn/Yi get upset over Jax in that line up; Cho/Annie/Ashe couldn't care less. Tryn/Yi could even through in a Spinning Slash/Alpha Strike for good measure when they're not too busy chopping Jax's team mates.
Really, the only way Jax can effectively abuse his stun lock is if Jax had a Ryze/Eve on his team, forcing your team to fight while holding each other's hands.