I don't have any info on the George's climbrate vs altitude, that would bear any resemblance to AH. The one I have is from that Army Intelligence document that Pyro said he doesn't believe in.
One thing to remember is that due to the N1K2's lack of a good supercharger, the engine peaks low. This means that its top speed is not much higher than its Sea Level speed. I think its something like 369 mph at altitude, and 359 at SL. Where in other planes you will see a high max speed at altitude of 410+, but their SL speeds are down in the 360-370 range.
Now its possible for it to "retain E" better than the 190 at SL, while not being faster if your careful of what you mean. Let me explain.
The N1K2 and the Fw190A8 are approximately the same weight, and lets make an assumption that their max SL speeds are the same. At SL, the N1K2 produces approximately 2,000 hp, while the 190 produces around 1,800 hp. Which means it has a superior power to weight ratio, ie power loading, which is directly proportional to acceleration and climbrate.
Now they both manuever, and lose some speed and energy. The 190 may actually retain its E better, ie less drag (which would allow them to have the same max speed, but different horsepowers).
But in this case the N1K2 is actually "making" its E faster, rather than "retaining E", due to the higher horsepower, and is out accelerating the 190 back up to max speed, which would allow it catch the 190 in an extended chase if you were on the deck and had to avoid a couple of mountains or three.
Especially if the pilot was good and was able to outguess the 190 pilot and cut an angle or two.
Just my theory. Wells? Or anyone else, does that make sense?
btw read up the thread in Visconti's post on the different horsepowers versus altitude of the Homare, and some other data.
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Vermillion
**MOL**, Men of Leisure,
Dicta Verm: "Never give the suckers an even break!" or translated "Never engage without an advantage"
