While some people have made some very good points of info here they still not looking at the overall picture focusing on certain individual points to make theirs look better.
I did both of those at same level for comparison .
Thats what those troops do in actual battle to the hero stats compared to roster view.
One thing every single person arguing for crit troops is forgetting is about ghosting. Any % on mana build is doubled.
No individual enemy in game takes full screen on hits. None not even titans. Crit hits are a random event, where as base stats are solid and effect specials. Yes the heaking effect counts on regen for Ares and Alberich too.
Like I said before there is no straight forward answer on this and should be tailored if possible to each individual team.