More thoughts...
Ju88A-4 1940
B-26B 1942
B-17G 1942-43
Lancaster 1942
Got that out of the way, now let's discuss what you really have.
The B-26B's role is well defined in AH- fast bomber, low alt, weak defensive armament. Result: easy to shoot down, but effective in the right hands. basically a bomber that can strafe targets, but quad .50' not very lethal.
B-17G: Slow to climb, carries good payload, and has great defensive armament. Result: once it has alt it is hard to stop. Has only one role; heavy bomber.
Lancaster: Carries the biggest payload of all, but will have relatively weak armament. It has a low ceiling, and isn't very fast. Result: If you ignore it, it can clobber your cities. It is no match for the late war fighters of our arena, and will die in droves. It has only one role, heavy bomber.
Ju88: A fast medium bomber capable of doubling (when the variants arrive) as a bomber killer. It can torpedo. It can level bomb. It can dive bomb (shallow). It can be used in anti-shipping. In short, it was the LW jack-of-all-trades, and will have every bit as much chance surviving the arena as does the Lancaster, and possibly even the B26 (higher ceiling and more maneuverable).