If that was the case the war would have ended in 1945 with the worlds air forces still flying 1940's aircraft, as for what the Gladiator could do that a FW190 couldn't, it could do really slow speed turns keeping out of the FW's sights until the FW pilot got bored and flew off or ran out of fuel, hardly a winning formula.The Fw 190 was better than a Gladiator, too, but the Fw 190 would have trouble getting a Gladiator in its sights for long since the Gladiator would be WAY more maneuverable. That does not suggest anyone would rather have a squadron Gladiators over a squadron of Fw 190s; they wouldn't. But it DOES suggest that the Gladiator would be able to do some things that Fw 190 could not do. Ditto the Hurricane.