First off, very nice 190 flying Pervert! I really enjoyed the clip. But I have to say that it was not the engine power that kept you out of gun range - you never got really fast in that fights, most of them were rather slow, with lot of vertical maneuvering. I'm sure if you had been in an A5, the results would have been similar.
When I talk about fast turns, around 250 -300 + is where I'm looking to make my turns (usually at least 300) there even with one elevator missing I have to be fast to turn to set up the overshoot/merge this is the same as a co -alt 1v1 the more speed you can pack on the better you can turn for longer. I could make the same kinds of overshoots with a k4 with a lot less speed maybe as much as 150 mph + difference.
Looking at the film as I start my initial turns,
Against the p38 - 350 mph
Against the p51 – 300 mph
Against the Spit14 at the merge I’m still too slow 257 mph I roll and spilt S to get some speed back to 300 mph as I loop up
The pony who tags my elevator I'm only 270 mph and can't get turned quick enough
Not that I need to after a lot of my own testing but if you want hard figures do a comparison of these 2 planes at the Gonzoville fighter comparison site or all the 190s, the A5 gets to the magic 300 a whopping 8 seconds later than the Dora in acceleration.
In terms of air combat that’s a lifetime, imagine in that film of mine that I needed an extra 8 seconds or even 3 or 4 I’d be dead. Sadly in the MA this is what happens a lot in the A5 .
So far as power goes I’m sorry but the A5 cannot hang like the Dora thats a fact.