While the winged hussars are famous, they were part of a larger army that (if not deployed to relieve Vienna) will have more opportunities to sap the Ottomans' strength. There will be a significant Imperial-Bavarian-Saxon force waylaying further advances into Austria, and Polish & Lithuanian forces in the north to stall a breakout to Prague or Krakow.
So we might see a fall of Vienna that changes not TOO much, with the Holy League retaking Vienna during winter or next year, while nothing much else falls to the Ottomans. Of course it's unlikely the Austrians will be able to capture quite so much in the aftermath if the main Ottoman army is succesful and then withdraws to winter camps.
This will have massive consequences later, but mostly on the Austrian/Imperial-French balance of power (the sheer size of the Ottoman collapse after the failure at Vienna implies, to me, that they were already weaker than their opposition, just that neither side knew that).