Yep, I end up seeing that at least 4 out of every 5 games because they get so much troops and that mod really buffs up battles as part of warscore rather than occupation.
That and Dorne is terrible at defending itself from anything except the Reach.
It's still not as weird as that game when...
I really wouldn't recommend Muscovy/Novgorod due to the need to westernise and pretty dire strategic situation at the start of the game between the Catholics and hordes.