Aircraft peformances, is this joke ?

[jf1981]

I tested other parameters of Spit Mk I

- Stall speed is too low by approximately 15 mph flaps up, by 10 mph flaps down
- Take off run is longer by approximately 30%

Thought the take off run is not a so big deal, it shows that the reacceleration from medium and low speed time is longer, the performance is not as good as it shall be.

The stall speed, on the opposite, makes for better turns at low speed. It makes the gap between radius of turn of Bf 109 and spit wider than it should be.