I thought i should notice this, since i came across it in my H/M Baktria campaign.
It seems that stat-wise, Indo Iranian cavalry and Baktrian medium cavalry hardly have an advantage over prodromoi. Baktrian meds have 3 points higher charge, but less stamina and no fast-moving. Indo-Iranians have a shield but less armor and stamina.
Despite this, both Indo-Iranian cav and Baktrian medium cav. have 200mnai more upkeep. So im left puzzled why i should ever recruit them if i can recruit prodromoi in the same regions? This bugs me, because they seem like nice-looking units with a great backstory.

Thoughts?