heavy cavalry engaging heavy cavalry

[Alanus]

... whether you could class Iazyges as heavy rather than medium or light cavalrymen like the contus armed Roxolani I don't know.

Regards

Rather hard to define the Iazyges on the field. They didn't use the contus or horse armor, and they had short swords, about 60 cm, not much longer than a Roman gladius, plus archery equipment. Although the swords had a ring pommel, they were fashioned after traditional Scythian models. Such a sword doesn't make the best of cavalry weapons, compared to a Roxolani, Alanic, or Hunnic, long slashing sword. In this light, and considering no contus, we might think of the Iazages as having standard cavalry.