[David603]

David,

The proper context for this was covered in my previous posts.

Frontline fighter performance varied wildly. It especially departs from official factory and test pilot data.

You seem to be largely missing the magnitude of this reality, but I will let it rest in peace.

I like your interest in this topic.

I would agree that frontline fighter performance did differ substantially from data recorded by test pilots in factory fresh aircraft and prototypes, but I'm curious as to why you think this difference would be beneficial to the Bf109 in such a way as to overcome the period of superiority in speed and climb rate the Spitfire IX enjoyed over the early-mid G models of the Bf109.

Surely the falling standards of production and field servicing in Germany towards the end of the war would penalise the Bf109 more than the Spitfire? Also, while I can accept that there may have been field modifications that would have boosted performance of individual Bf109s, surely these can't have been applied on a sufficiently widescale basis so as to make a typical Bf109 in service outperform a typical Spitfire in service over this period? C3 Grade fuel for example was in service, but in strictly limited quantities.

Regards