I would like to know the difference between counterattack and counter-attack.
I know counterattack is for the troops, and counter-attack for the Hero attribute.
But i dont understand the difference between these two.
When should i use which one?

Counter attack helps you counter a melee strike with one of your own. The ratings merge together through a formula to give you your counter rating.

Honestly for tanks it's not as much of a needed stat due to the fact that tanks don't have a very high attack rating. So typically they are their to take damage instead of deal it. So those skills aren't as important and you could replace them with like Acclaim and one of the Dodge skills.

Thanks.
But if a have a hero with a high rate of Attack. Which one of these 2 tomes i should choose?
And what kind of army is better for a orange very balanced hero with all stats almost equals?