Mechanics of Morale

[Kaihekoa]

I saw no details about how these bonuses work in the manual or tooltips from the game. Exactly what stats or bonuses are given/removed for each point of morale, and how does it scale? I am wondering if the morale and racial item bonuses are worth pursuing now that I am clearing the dwarven lands and have access to dwarf tanks; I use polar bears and horseman now.

Also from the rage tooltip it reads that rage increases your chance of a critical attack, but I haven't found any information on exactly how it works. If it scales well, the increased crit might be better than a low cost rage ability.