Having Prussia on board would make things easier, instead of having them launch their Sixth Coalition a year later. Insofar as actually winning in combat, avoiding the debacle at Ulm would be necessary.
Having Prussia on board would make things easier, instead of having them launch their Sixth Coalition a year later. Insofar as actually winning in combat, avoiding the debacle at Ulm would be necessary.
But in all seriousness, Austria is not going to win unless more of Germany rises up in its favour. At the very least, Frederick William III of Prussia needs to stand by his promise and bring Prussia against France. Such a situation would probably result in Austria attacking north of the Danube as opposed to the OTL plan.