Probably depends most on what area you live in. If you live in a place with, and play lots of tournaments on, long open courses, you probably need to throw a lot farther than someone who is really good at 350-400ft tunnel shots and plays woody course events.
This
A center of the country player is going to have a hard time on those large open courses with under 400' of power, especially when you bring the wind into play. On the east coast though (VA,NC area) there are a lot of courses where 300' accurate power would be more than enough to shoot over 1000 rated rounds.