What lane opponents does AP Jax do better against than old Jax? Also along the same lines when is it a good time to take AP Jax? What runes/masteries do you run on AP Jax?
Lanes where you need more burst then sustained damage like Teemo or Vlad or Singed. Id take AP Jax when i know i can either farm lane and become a monster late game or when i know i can beat that matchup. AP Jax also has matchups that hes worse off in then regular Jax (Garen, Darius unless They slip up and let Jax get an early kill). Also i pick him when my team has good initiation and/or teamfighting capabilities. Youre going to be squishier then regular Jax, but youl have lifesteal and spellvamp still so if you dont get bursted down you can hold your own.
Il also take him if were going a double AP comp or if we need burst damage.
Runes/Masteries are 21/9/0 taking AP masteries, with Mpen or AD reds (if you want the last hitting) Flat armor or health per level yellows, AP per level or MR per level or flat MR blues and flat AP quints.