Top speed of a few planes... May surprise you

[MorgothNL]

Dont forget that different planes have different performance and other altitudes.

Yes the P51 is too slow .. but it gets closer to the LA speed when you increase the altitude of your test (P51 is a high-alt performer...and LA a medium alt)

[Lexandro]

People also forget that all speeds for aircraft that are recorded are done so in a dive. Crates would dive at around 30 degrees and the max top speed would be recorded. However its general performance speed is always going to be different, simply due to weapon loadout, fuel, weather, and pilot skill.