The catch is that they are hungarians!!!

Well, the only catch I can think of that they do not have strong city H2H infantry. The best unit you get from cities is pavise xbow (it took me while to find out that they have pavise!!!), and later on arquebus and hussars (very nice unit!). So all your strong H2H inf comes from castles (DFK/DCK, pav.spearmen). But this just gives a challenge compared to lets say italian factions where you can do the whole game without castle units.