That means that there are applications that can be better served by not using AWE. Why? Because VAS isn't required to mapping pages to the data stored in AWE. So in certain memory starved applications, you might want to experiment with what happens with AWE disabled. It's possible that you might do better without AWE enabled!
And if you're ever looking for more information on memory management in SQL Server, check out Slava's very technical blog: http://blogs.msdn.com/slavao/default.aspx. It's the best!