19.6 degrees per second isn't too lousy on the K4's end. I'd love to have that turn rate in a Pony with one notch of flap. Also the full flaps radius of the K4 shrinks to 534 feet while still maintaining that 19.6 DPS. Compared to late-war planes of similar engine performance, it is fairly maneuverable.
https://onedrive.live.com/view.aspx?cid=4F7912F19B484B3B&resid=4F7912F19B484B3B%21761&app=WordPdf&authkey=%21AH41epN2ncdKKcg&wdo=1
It is, but I compared it to the Spit. When I use the g-14 against the Pony, the trick is to slow him down and get him into a turn fight. When I use the K-4, the Pony doesn't have a lot of advantage outside of his high-speed handling and ballistics.
Generally, all I worry about with Ponies is getting picked - same with the Typh (only worse - those damn Hispanos). It's the Spit, imj, that is really the best pure air-to-air fighter. It's good at everything, pretty much: climb, speed, firepower, lateral turn.
Mind, I don't dislike either the d-9 or k-4, though I spend most of my flying time in the g-14. I just don't do that much turnfighting in it. Mostly, it's dive, fire, climb, roll, reverse, dive...Sometimes, I'll saddle up, mainly because I'm not that great of a shot. Yesterday, for example, I saddled up on a P-38. There were only 38s a nd LAncs in the neighborhood so I said wtf and went fangsout. Generally, I'd call this dangerous, since, in the 109, it is safest/best to retain that alt advantage so that I can always climb away. Those 38s were so poorly flown that dispatching the hapless pilot was relatively easy, then I just extended away from his hapless remaining mates and landed my kills.
BTW, I tried the "porpoise" maneuver Saturday and evaded about 4 bad guys with it. It bought me time to run to ack. Whilenboth the maneuver and the run to ack may be game'y, so was the mix of baddies (Yak, La-la, Spitties).
The Porpoise: an Ace move...
Thanks for providing the link to this chart. It's very useful.