Will try to explain shortly.
I start campaign with standard difficulty with Rohan. Help for a while in Rohan and Gondor until I take Mablung and Ulfas with me and then go north.
I receive message from Theoden saying I have to meet him because the war has started but I want to hire all companions first so i decline (i decline 3-4 times before accepting). Cain Andros gets sieged a couple of times and then conquered by Mordor, but later it gets reconquered by Gondor and Gondor takes also the other side of Osgiliath having however 2 dead captains already. Rohan has destroyed one camp from Isengard and in the North things look nice for the good guys too (2 orc camps destroyed but one lothlorien's captain dead too anyway).

Is this normal? Or, as I didn't meet my faction leader earlier, the game didn't punished my faction in a normal way for any reason like a bug or something? That could explain why Rohan is so strong and that is supposed to be helping Gondor because Gondor is supposed to die slowly if left alone.
I mean, maybe not meeting your faction leader when requested breaks the game?
If not, was my help at the begining THAT much?

Great job by the way, I didn't play this mod since long time ago and I still love it :D