what size of map are you playing on? I find it fairly easy to convert factions to my side on hard.
All my games were in 5.4 and were on small maps that my comment was in ref to. Well almost, also played 1 tiny 1 large (lrg bogged down so only played a little) sis not cout them.
Strange thing; you should mention the hard setting,, now that i think about it, i did do 3 (again small maps) games on hard and iirc it was easier to get factions to my side.