OC, Lundstrom said " with the partial exception of the IJN" USN pilots were trained for FULL deflection gunnery more than any other Air Force, including the AAF. Part of that had to do with vision over the nose. He also mentions that some of the high scoring pilots in the other air forces became very fine high deflection shooters. I believe that it is accurate to say that in WW2, the USN put more emphasis on full deflection shooting than any other AF but that does not exclude any AF from having pilots who excelled in that art.