Yeah he doesnt and he cant be compare to Jax.
Jax damage outisde of his KBs is low as hell, so you need to open your opponent like 10 time in order to take a round.
Liu touches you 3 time and you are dead, and with his tools thats not very hard.
Atleast Jax have some requirment for his KBs, unlike free land on will KB of Kang.
The only thing that Jax has equally good to Kang is the FB. Its maybe even a bit better, but Kang FB scale better.
Still Liu Kang totally destroys Jax in direct matchup.
Liu Kang doesnt need just 1 or 2 things to be tooned down. He needs a lot of his tools to be tooned down.
Firstly best pressure character in the game doesnt need zoning at all, yet he have best zoning. His low Fireball and his Fireball amplify just need straight delete. His Flying Dragon Kick needs to be adjusted. His throw KBs need to be deleted. His F4 needs to stay the same, just not being 9frame, but 13f. His 1,2 needs to be +1 on block, not 3.
His F4 and bicycle kick KBs are okay.
His FB needs to scale higher and reduce the block stun of his FB, so you can actually punish his FB, not just on paper but in the reality is well.
A lot of his move have very short window for punish, if you catch him on recovery, thats also needs to be change.
Also fix his damn hurtbox issue.
And maybe give him new string, and the character will be still in the mix strong.