The Halberstadt cl.ii is the German plane in RoF which FM seems most off from Quotes and many descriptions of ist own and enemy wwi pilots !
The Roland C.II is much better in a Dogfight than the Halberstadt cl.II in RoF!
The description of Caracteristics for the Halberstadt cl.II on the RoF shop is very close to the Quotes I read about it, but has almost nothing in commen with its FM in RoF.
The topspeed of the D.IIIau in RoF is close to the expected Speed for the "real " version with D.IIIa engine. thhat´s odd but ok,... can use the D.IIIau in RoF as the more realistic performing Halbestadt cl.II.
The topspeed of the real D.IIIau Version was propably much closer to 182-184km/h.
why do i come to this adjucates guess ? ... The later Halberstadt cl.iv had the same wings and very close the same all up weight as the cl.II.
The Halberstadt Cl.IV was a bit more manouverable than the Cl.II but used the same D.IIIau engine and reached
186 km/h at sealevel.
But all that is not the main thing which dosn´t seem to match the performance of the original !
The Halberstadt cl.II had a really good turnrate cause of its relative low wingload and good weight/power ratio.
( Thats was the main reason for developing the CL- Fighterclass!)
In RoF it is realitve nimble but looses speed very fast in a turn.
Its realtive bad sustained turnrate is unrealistic compared to Roland C.II
( of 1916 !) and Sopwith 1 1/2 Strutter and does not correspondend in any way even with the Quotes on RoF shop!
For this reasons, in my opinion its physical and aerodynamical the most unrealistic FM of RoF.