Excellent point by Mogster, as related to WWI FMs!!!
As was often the case with flying/fighting WWI aircraft, it was not always the aerodynamic qualities of the plane which proved its usefulness for combat, but the control-ability of the pilot to push an aircraft to its performance limits that made the plane a stand-out. Early aviation aircraft often exhibited a total lack for pilot ergonomics, with poorly harmonized controls often requiring large differentials in stick/pedal movements and the input pressures required. Some aircraft required a throw of 2 feet to traverse the ailerons to their opposite direction, and ailerons were often very stiff to operate while rudder movements remained sensitive in response but with little control feedback.

When we read that a certain plane was difficult to fly, while another was nimble in comparison, this often expressed a difference in control-ability, as evidenced by the aircraft's state of control harmony, and doesn't always speaks to the inherent aerodynamic qualities of the airframe (as if they could be separated from one another somehow). Of course having an aircraft that displayed good handling qualities as well as fine aerodynamic potential could prove to be a real "war-winner", as the Fokker D.VII was seen to be, and the difference between flying a Fokker D.VII with horn-balnced control surfaces as opposed to a twitchy Camel, helps personify as Mogster mentioned above, the difference between flying our PC's offering no authentic-like flying feedback, and doing the flying in the real thing.

We're not going to get the real feel of flying WWI aircraft in any retail flight sim, but we can get facsimiles that detail most of the important flying parameters of the era's great planes, and that will be fantastic in itself!