The point is people will have to find a way to adapt. The old way guaranties that the attacking tank is dead before it spawns ( according to Lusche), maybe the solution is to bring a wirble along just to kill storches. Maybe a porking mission is needed first by air to inhibit the launching of storches. Maybe and friendly fighter to provide air cover.
If it IS unbalanced I'm sure HTC will take a look and make changes. If only we had some data showing how GV's being killed by air and ground have increased or decreased since the addition of the storch.... maybe in a "pie chart" form to ake it easier to understand. 
Yes, people will adapt, but they do adapt in different ways, which may less than optimal or intended by original design. For example, players did very well "adapt" to the changes in strats and the new towns...

Also not every gameplay issue is quantifyable that easily. It's not about any number of kills, it's in this case more about how they are achived, what kind of combat oppotunities are being left. In this case specifically it's not about GV being more or less killed by planes.
It's about giving an incentive to an attacker to spawn his tank to an enemy base to ATTACK, preferably in the same kind of perked GV the defender is using, to create some more intense combat situation. And wirbels do not help against that specific "landing" problem, and neither does killing the Storch's hangar. In the end, the only viable option is tot totally flatten that base with bombs, then overrunning it.
But I also want to see more opportunities for low to med key action. I'd like to see more "balanced" matchups, especially perk tanks being used to counter the enemie's perk tanks.
The best "solution" I see without meddling with any game mechanisms is in fact a map design one. We need more maps with a LOT more setups like V135-V136 on Ozkansas - 2 opposing Vbases spawning towards a center area. That way both sides can retreat, can flank, have acess to the Storch and so on. That's simply the place wher you have in fact the most varied tank combat environment... until one side brings in a CV and the place is captured.