Found it! Here:
https://forums.totalwar.org/vb/showthread.php?t=108176

And yes, the bloke modded the EDU so that all infantry units have 200 men. Thus the game was unbalanced quite a bit by that, as you can imagine what Gaesatae would do if they had 200 men. While Pantadapoi would have only 200, as opposed to 240. Same with the phalangites.

But this does also mean that the enemy elites were more numerous and the cavalry had less of an effect. Which is historical, because having 50-men mounted units and 120/80/60 men infantry units is not. Not proportional. Most mods fix this, but EB does not. (Thankfully too, since fighting with 20/30 men cavalry is tough)