If it ain’t Boeing, I ain’t going. No Lancaster or Liberator could have survived that................................................ Boeing built British bombers too, a little known fact.
I don’t think it was a question of workmanship as much as design. A lot of American World War II aircraft were sledgehammers, the P-47, the F-6 Hellcat, all the Boeing bombers. The Lancaster was mostly used for night bombing for a reason, they simply would not have survived daytime flying over Germany.
The Lancaster was an impressive weapon and superbly flown and employed, but it was nowhere near as rugged as the B-17.