IRL lancasters and halifaxes where easy meat trying out daytime raids the few occations they did 1944 , when Allied thought they had total supremacy.
According to JG26 war diary volume II , the brittish bombers where almost defenseless with their .303 against the fw190s and 109s.
6th august 1944 they claimed to have shot down 4 halifaxes and 3 lancasters without any loss for themselves.