I will freely admit that my first-hand experience with WPGs is close to zero. I've seen a few, scratched a couple chins, and watched one in a test.
My decision came from talking to hunters who had hunted over them, and reading about them on various forums and magazines.
Whereas the info I found and heard about WPGs was mixed, varied widely, and left me questioning my choice, the info I found and heard about Pudelpointers was consistent and reassuring.
IMO, if you are looking the best chance at getting a hard-working, exceptional versatile HUNTING dog, Pudelpointers are at the top of that list (with a couple other breeds), and make exceptional family dogs as well.
If you are a hard-core water fowler, get a lab; if you hunt quail in desert country or big fields, get a pointer or setter; if you hunt stubble fields 640 acres at a time, get a Visla; if you hunt ring-necks in thick brambles and thorn, get a Cocker.
If you hunt ducks, geese, sharpies, ruffed grouse, Huns, quail, pheasant, pigeons,.... snowshoe hare, Whitetailed jackrabbits, squirrel, fox, raccoon... consider a Pudelpointer.