What civilization has the worst unit roster in your opinion.

[mikepettyrtw]

The Sweboz roster is not "weaker". I think its just more limited. Sweboz armies are very strong and In forests its like impossible to completely rout them

I respectfully disagree, I just attempted Khalid Ibn al-Walid's tactics in a custom battle against Pontus that included their Chalkaspides, Pantodapoi Phalangitai, Thureophoroi, Pontic Thorakitai, Persian Hoplites and their BG Cav. I was outnumbered badly as well; I think it was something like 1700 (me) vs 2500 (Pontus). I used only Arabian Light Cav(3 units), Arabian light Inf(4 units IIRC), Sabean Medium Cav (1 unit), I BG and 2 Sabean noble inf plus 2 slingers. No units started the battle with chevrons. I only took roughly 600 casualties. The map was the same for both sides. I used no Elephants even though that's Saba's coup de main.
As Sweboz, such a thing would be impossible without plenty of FM BG or gold chevrons and possibly limited recruitment zone fright Inf and loads of clubbmen. I know so because I have tried it before in custom battles. If one brings lots of clubbmen amd chevron'd FM BG, then all but those on the steppe need to take notice. But that's it for Sweboz. No ele's, no monster cav, no superior skirmisher troops; almost everything Sweboz has can be matched or exceeded by their Gallic Neighbors. Gaesatae and Botaroas/Botraos along with the plethora of other Heavy Infantry the Gauls have, in combo with Brihentin FM BG will destroy a Sweboz army, even with clubbman and FM.
However, Sweboz army's with lots of FM, or post Reform (reform is VERY late game IMO), with lots of EXP could do the defeat an identical Pontic army with similar post battle stats. Indeed those clubbmen are monster anti-roman battering rams. But that's at enormous cost: if you loose a major battle with all those FM in it, one risks their entire campaign, no matter how many chevrons you get. But that amongst other things, makes the Sweboz campaign exilerating fun.
In conclusion, I did not say their army's fighting ability was weak, but rather their roster was weakest considering context (Saba, Arverni, Aedui)