Generally, the higher up you go in the watch "hierarchy" the worse the warranty gets. AP only just went from 2 years to 5 years, same with Girard-Perregaux. Vacheron, Cartier and Breguet are all 2 years. Even Lange are still 2 years, unless you buy directly from one of their own boutiques, in which case it's 3 years.
At the risk of ending up in the golf club thread, it's one of the reasons why Rolex / Tudor are still an appealing choice for many people, especially for their first expensive watch. Five-year warranties and (in the case of Rolex) ten-year service intervals.
Generally, the higher up you go in the watch "hierarchy" the worse the warranty gets. AP only just went from 2 years to 5 years, same with Girard-Perregaux. Vacheron, Cartier and Breguet are all 2 years. Even Lange are still 2 years, unless you buy directly from one of their own boutiques, in which case it's 3 years.