WTG badboy on your excellent article on AimHQ re energy management.
For those who have trouble reading E-M diagrams, I've pirated one of Badboy's (Showing Spit IX-P51 comparison) and made a few modifications.
The beauty of E-M diagrams is that they not only show you what an aircraft can do, but also suggest what kind of tactics you should employ when faced with a dissimilar enemy aircraft.
Hopefully, its self-explanatory. Equally hopefully, its correct

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When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things.
Chapter 13, verse 11