I don't think it will be that difficult. We won't have Mavericks to do such feats. No guided munitions, no heavy cannons (except Hs129I agree, it will be a small red line to walk on, if the planes have their historical accuracy they will be almost worthless against tanks, if they get yoloswag360noscope accuracy it will dominate and leading to turtling because of the fear that 2 fighter-bombers hammer your attack force into pieces.
Difficult to balance.
Dont underestimate those planes, 1000lbs bomb next to a Tiger means its probably gonna die. Not to mention air reacon which might prove very useful. We still don't know how good the AAA is going to be. What planes will we have? Seems planes like A20 or B25 might still be in for the tactical nature of the game. Ju88 would also fit.
I think planes won't be as powerful as in WG, but they will have an impact.