I fired up a game as early age Ulm with your mods in effect, and found that my warrior chiefs now had the stats of horrors! I did some experimenting and found that it's caused by the general Horror Nerf mod. I don't know if other units are changed as well, but I thought I'd let you know.
It seems some units numbers have been changed in the last patch, normally my mod only change the hunter of heroes (and some other unique horrors in the version posted after).