Ken Marshal has informed me that it was a Prussian victory, the Austrians advanced but Ally's dice throwing did not match up to his ambitions and the Austrians were overwhelmed by the Prussians.
It is a hard battle for the Austrians to win, the Prussians have more cannons and infantry plus the field is not open enough for the Austrians to exploit their greater numbers in cavalry.
Still on the plus side Ally won unluckiest general award.