In SS bodyguard units are less overpowered compared to the vanilla medieval, so, if we want to use our general we need to have triple careful!
In my campaign with Norway I' am in a fierce duel with Kievan Rus that, by the way, is the second biggest empire in the game and to help (sarcastic), the european bodyguards are substantially weaker than eastern fellows, so there is a big disadvantage in my opinion, even more because their units consists in a large portion of anti calvary units.
F or example the Europeans have an attack of 5 and the easterns of 9.
So what would you do? Play as they are or give up to the temptation of changing them on the descr_unit.txt?