After Austrian Anschluss, March,1938, UK’s perception was that Germany would be economically/industrially ready to re-run April,1918, in Spring,1941. So UK Policy was, safe behind the Maginot, to deploy escort cannon fighters and Heavy Bombers to o’erleap the Siegfried Line, for aerial blockade to supplement the standard Brit maritime strategy. Military failure of Whirlwind and Warwick emerging during Summer,1938, due in large part to the engine firms, was a factor in Chamberlain trying to buy time at Munich, so that Shadow Factories could shift into more Wellingtons, Hereford, Manchester, and Hurricane, Spitfire. Castle Bromwich Aircraft Factory was to have been Whirlwind-centric. So, to a criterion of military consequences of delivery/performance disappointment, Warwick and Whirlwind win. They caused 1940/41 to be a near-run thing.