I personally do not think that any plane should be modelled after some specifications. However seeing the dispersion of the test results one wonders why the 109 can only do 450 kph (pre-patch) at sea level and from what I read will do only 467 kph with the new patch.
Seems completely arbitrary to set it to 467.
To my understanding IvanK's graph shows a 109 with Rolls Royce radiators (because the original ones were damaged during the forced landing of the 109?) and which is well below in altitude speed than the French test.
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