Which nation is the best?

Ermor isn't hard to beat, it's just hard to accept the loss of troops for gaining nothing. It's the mentality behind it.

The dying dominion themes Ermor are in actuality on the weaker end of the stick during MP. And suffer from the stigma of SP

Broken Empire is decent, but it lacks versitility and without a cheap researcher and their upper end mage being combined to a priest you have to pay double the price to get a decent mage and decent priest they have alot to work against. Being able to cheaply raise ghouls that tear up your population doesn't quite cut it.