Spit/109 sea level speed comparisons in 1.08 beta patch

[Crumpp]

I say it does make a difference as the extra boost came with a significant increase in power which significantly improves the power weight ratio

What power and speed? I will recalculate and repost.

You have a point

If you understand stability and control engineering, Mtt did a good job on the Bf-109.

Also what is sustained?

It is the performance the engine can perform until it runs out of gas.

My understanding is that a sustained turn rate is one that can be maintained for long periods of time without losing altitude, maximising the turn rate and radius of turn.

Yes

On both these counts the Spit will beat the Me109 as proven in the Rae tests which were sustained turns without losing height

The RAE test's were of turning ability. If you look at the test the RAE flew the airplanes at ~115KEAS in their evaluation.