Here's the numbers again with the Albatros D-Va added for comparison:
Aircraft Engine Speed at G.L. Rate of Climb Ceiling
D-V 100hp Oberursel 107 mph 8.6 ft/sec 13,000 ft
D-VI 110hp Le Rhone 125 mph 18.1 ft/sec 19,500 ft
Comparison A/C
Fokker D-VII 185hp B.M.W. 124 mph 19.7 ft/sec 22,900 ft
Spad XIII 200hp H.Suiza 147.5 mph 19.3 ft/sec 22,300 ft
Sopwith Camel 150hp B.R.1 N/A 121@10Kft 20.6 ft/sec 22.000 ft
S.E.5a 200hp W.Viper 137.8 mph 15.2 ft/sec 22,000 ft
Albatros DVa 180hp Mercedes 117 mph 9.6 ft/sec 20,500 ft
There!
-Al