Bill - the Me 109K was a marginally better interceptor of fighters than a Fw 190D. The BoB might have had a different outcome with Fw 190A and longer legs to escort LW bombers in daylight, and much longer for fighter sweeps. The 109E failed as an escort simply becuase of range (IMO). It had zero capability of providing target escort to Ju88 or Do217 or He111 at their normal ranges whereas the Fw 190 could have upgraded internal fuel to make target escort work.
Yes, but its pretty unrealistic, considering that the 190A was not truely operations-worthy until late 42/early 1943 due to engine development problems. The very reason why the first 190s were deployed in France (ie. friendly turf) was that engine reliabilty was not sufficient to fly over hostile territory (desert, sea, russia)!
What they would have really needed (realistically), was the droptanked E-7 a couple of months earlier and retrofitting the others with that capability, or with a bit of optimism, widespread use of the 109F that was indeed in production by the summer of 1940 and had a range equal to the FW 190A.
In all other roles but fighter/fighter interceptor role at high altitude, the Fw 190A was a better choice.
They pretty much operated at their strenghts - 109s for high altitude fighter and photorecce units, 190s for medium altitude fighters and Jabo units. In any case, you cant build a fighter that is the best for all purposes - and while greater versatality of an airframe is great from the production point of view, tactically and operationally its a bit overrated imho. Units typically perform the same operational profile, and success depends on weather they get the right training and equipment for that task, not on which plane they fly.
A high altitude 109 staffel operating against high flying enemy photo recce aircraft will hardly miss the greater payload, since they rarely if ever do jabo missions (neither does the crew have the training or experience for such missions, much overlooked imho!). Similarly, no 190
Schlachtgeschwader would complain about great high altitude performance.Its about using the right tools for the right task.