Jax in URF is not balanced nor fun

After playing more than few games on PBE the new snowbattle AURF I can conclude at least one thing for 100%. Jax isn't no where near balanced and is on the same level of fun as runeglaive ezreal - aka its not fun. Sure it's fun to play him since you build almost whatever you want: full ap. full ad. ad bruiser. ap bruise all boots etc. and your enemies still won't have any chance againts you.

It also doesn't matter who you focus in a fight since there is almost 0 counterplay to jax and with random champions your team can have 5 ad champions and then jax can just 1 vs 5 the whole game.... You can also just press all of your skills in any order you want and the enemy is dead. Once you manage to get your cursor on top of the enemy he is done.

When it doesn't matter what you build, what skills you use or who you focus in teamfight then maybe just maybe the champion is too op?

I hope they do something to jax's damage or his cooldowns or something before this gamemode hits live servers.... Or its gonna be pretty ugly.