(No option for cuirassier, voted heavy)
Cuirassiers count as heavy cav i think. They certainly have the same characteristics, slow horses, poor turning speed and a big scary ass sword
The same characteristics but the cuirassier possess a armor bonus on top of the health which makes them punishable. Also, they are more than viable while on the ground.
This means a less careful playstyle than the heavy cavalry. I.e circling closer to the enemy adding pressure while being able to take a bullet or two, even to the character, among other examples.
Got downed by Maktheridon the other day. He slashed me 4-5 times with his officer sword before I managed to hit back and barely kill him. Walking tanks, I say!