I think it's very nicely done. For example weapons/armor I found while being lvl 8 in alpha require 11 str. That means if you want a nice weapon/armor you have to invest the majority of points in str. Most warriors will only be able to attack once and then twice the next turn. But this is already a lot, because the dmg is very high and they can tank a lot. The wizard gets more AP and thus can do more damage, but also dies quicker. The drawback now is that armor boots/helmets/gloves doesn't have a str requirement, which makes the wizard tanky as well. Also the wizard gets spells that cost like 9 AP early on, so he needs that huge ap pool. But you can also give your mage a melee weapon, spears are very nice and let him attack 2-3 times.