Il2 sturmovik original fight model was different?

[Blackjack]

I did fly 1.2 sometimes just for fun, and depending on the patch level of the old il2, they are quite difderent, not the individual models.

The energy bleeding in 1.2 feels excessive if not exaggerated, flying an il2 does not feel like flying an aircraft with an powerful engine, but like a brick with extended airbrakes.

This all changed with the release of forgotten battles, and resulted in some general flight model between il2 1.0 and 1.2, as there is no il2 compare data , this is how it 'feels' having flown those versions on- and offline.