Allied Versus Russian Aircraft During WWII

[Fredfetish]

Mostly this tread is about how an air war between the two sides would have played out. I'd love to play a scenario with P47's vs IL2's or Lagg's vs P51's. Maybe scramble missions of Migs to intercept massed bomber formations...

Couple things though:
1. Agree that the first side that would have taken the initiative would probably made major advances. Maybe the Soviets would even threaten the Western Allies (WA) ports. US probably would have pulled out of the war if this happened. At least with direct intervention.

2. My perception is that the Western Allies forces were not too badly equipped (e.g. navy, tanks, artillery and logistics). They were lacking in man power though, but would they not have a material advantage? Would liberated France not be a major contributor in this scenario?

3. Strategic high level bomber strikes against Russian airfields; could this have swayed the air power balance in favour of the WA?

4. Lets say it went in favour of the WA, how could they have approached the vast Russian country side and the winter differently from the Germans? To have won, would they have had to take Leningrad & Moscow?