you have too much attack speed. jax tops out with last wisper and malody alone after his fourth skill is done stacking. with having the life steal from malody you need to add some strong attack or AP (depending on how you build your skill tree). stevenking was so kind as to tell you that your wrong but he never says how. great feed back on his part.

i think u don't know how to use jax

u should try the build again

Jax is OP