High Leadership = little xp

[Fatt_Shade]

Good way for lvl up rage skills is summon army with black dragon stack. How i did it in AP/CW (here should be same) :
Find some mostly ranged enemy and from start of battle summon as much as possible and just push summons on enemy but DONT kill them. Just clog arena in summons and fly over YOUR units with black dragon killing them and gaining lots of rage. That rage use for non dmginig rage skills - in AP/CW was mana accelerator , mystic egg , wall. When get bored just leave lightning ball (best exp for rage skill) to kill enemy units. Once i got from 32 to 37 lvl pet dragon with this in one battle (mana accelerator exp gain was 105 per cast)

[LegendMaker]

Thank for the info, Fatt Shade!

To sum it up, arrive at the battlefield almost "naked" troops wise compared to the enemy army, but with full rage, and cast a mass destruction rage spell like Gudriga's rage on a maximum of enenmies at once straight away = a ton of rage xp.

[Loopy]

Are the rage XP per class multipliers the same as in previous KB games? Because now that Skald has more leadership it would seem that they get a bit shafted, when they should be better than Soothsayer.

The scalar from enemy troop leadership / your troop leadership is capped. I'm not entirely sure what the formula is, in the KB:AP guide it looks like everything is literally done twice, but the scalar is capped at 1x at one time and at 2x the other time. The whole thing is somewhat poorly translated and not all the well explained though so I'm not entirely sure what the big picture of things is.

[Fatt_Shade]

About lvlingup rage skills difference between classes, there is info on this. Go to game folder/sessions/addon/ses.kfs/hero.txt file and check for this : k_spirit_up=
Every class have different modifier for spirit exp (warrior highest, soothsayer lowest). So yes there is difference in base for every class rage exp gain.
rage generation in battle is whole other thing, and is effected by rage hero skill in might tree, or some item like spear of rage (+20% rage generation speed), pain skull (+50%) , baal belt (+25%).