Berlin Burns

POD
After his stunning victory at Austerlitz on the 2nd December 1805, Napoleon does not make peace with Austria, instead sacking Vienna and forcing unconditional surrender at the Treaty of Bratislava (Pressburg) on the 14th of January 1806. This treaty divides Austria into many small states: Austria, Hungary, Bohemia, Galicia, Croatia and Transylvania, all vassals of France. In the War of the Fourth Coalition, Napoleon defeats Prussia as OTL, but, as the title of this althistory suggests, burns Berlin to the ground and makes Prussia a vassal. As OTL, Napoleon imposes the Continental System on Spain by invasion, and the British land in Portugal. However, Napoleon's invasion of Russia in 1811 succeeds, leaving him true master of Europe...