(off topic) As for assaulting walls with towers and ladders, you have to make sure that you have 2-3 towers/ladders per wall section. If you have towers, you only need the unit pushing it. If you have ladders, you should have a unit behind, and send them up with the first unit. Also run your ram through the gate, and send a couple of units through there and up on the walls from behind. I haven't used either spies or siege equipment for a very long time, except against citadels.

(on topic) I think the Vards and polish nobles outperform their stats. Yes, they have incredibly nice stats, but does the vards have so good stats that they should beat back 4 units of turkomans? Not that I'm complaining, I like jedi's.... Also, do the dismounted chivalric knights outperform DFK?