1CGame Studios interview

Originally Posted by SaQSoN

It should be noted, however, that he flew newly built MiG-3, powered with Allison engine (lighter and more powerful, then AM-35) and newly built I-16, powered with ASh-62 engine from An-2, which is less powerful then the original M-62 and more over, equipped with different then original I-16 propeller.
Add to this, that both planes now flown under modern safety regulations and never were taken to the limits, they were pushed under real combat.

So, hardly this comparison is suitable for original WWII planes.

Over the years I've had the opportunity to fly a number of aircraft types that were available with different engines and, consequently, weights, and while I would agree that what you say is correct in specific detail it's been my impression that planes retain their basic personalities regardless of the engines of varying power that they have. I wouldn't use the current aircraft to define the types flight model in game but I wouldn't dismiss the general characteristics of the same planes out of hand, either.