OpenRA - Combined Arms difficulty explained

[willeatpants]

Going through Combined Arms mission.

I was playing on hard initially but got annoyed with the loading times since I kept on messing up during the first set of allies mission.
Drop it to normal - now the game is too easy...

I know in CnC remastered;

easy - AI has 50% lower HP and does 50% less damage
normal - normal
Hard - Players unit have 50% less HP and does 50% less damage.

I cant find a breakdown of what the difficulty does for the AI on the forums, can someone tell me what bonuses/negative occur at high difficulties
I assume Easy Normal and Hard are the same as CNC Remastered.