Wow. Very informative thread. I was always under the impression the Buffalo was one of the major dogs of the war, though I always had great respect for the Hurricane. A few quotes really have me interested in learning more about the Buffalo...
"Climb and Dive - The climb to 15,000 feet is better than that of the Hurricane, and the aircraft easily out-dives the Hurricane. "
"Comparative Speed in Level Flight - [The fighters were flown at the rated heights for the two-speed supercharger on the Brewster's Cyclone engine.] At 6,000 feet the Brewster was approximately 15 m.p.h. faster than the Hurricane; while at 14,700 feet the speeds were practically identical. "
"Maneuverability - In the air the Brewster Fighter is very maneuverable, its aileron and elevator controls being positive and lighter than the Hurricane or Spitfire at all speeds. The rudder is definitively heavy, but only a little movement is required for full control. It can easily turn inside the Hurricane."
Wow.