What Maraelion said. You aren't supposed to expect Mordor units to trade blows with the enemy without the help of the Nazgul to debuff. Stop posting all these suggestions to make Mordor stronger, they don't need any further buffs. All you have to do to win as Mordor is spam lots of free orcs, and keep your stronger, elite units in a group with your heroes. Do this and you can beat most enemy armies, even fully upgraded ones.