There's a real balance issue here Mordor needs to be harder to invade, and Moria needs to be easier. If you can isolate Moria, so that it can't be reinforced, you can siege them out and after 11 turns, the defending army is a lot weaker (and there are less Balrogs there are ten of them in this version. The Black Gate is a matter of waiting for the siege to run out or winning a sally the stack that spawns really isn't that formidable. Tried again and lost again as Rohan this time the Balrogs (which I did kill this time) wiped out an entire army practically. Moria, by far, simply because of the Balrog.