Lancs are easy kills for anyone, try the same for B24 or B17 for example.
I did that, a couple of thousand times. Once you are attacking off angle, the probability of being shot down diminishes greatly. It's way much harder for a bomber pilot to hit someone coming down on him from 1 o clock high that for that fighter to hit the bomber. High closure speed, rapidly changing angles and easy to get lost when tracking the fighter.
I'm wasn't an avid buff hunter only during all those years, but flying a lot of bomber sorties myself. I'm certainly an above average buff pilot and gunner myself. I guess that something like 9 out of 10 fighters I shot down were simply creeping up my six o clock. Once I saw a fighter overtaking me and setting up a non-conventional (everything but 6 o clock) attack, I knew I was screwed. I was almost always right.
And going for a non-6 attack has not even much to do with
skill. It's simply a descision that mostly being born out of either ignorance or impatience.
And I have to repeat it, even though the majority of AH fighter jocks insists on the 6 o clock attack, the A2A K/D of the bombers are nowhere near anybody would expect from a term like "deathstar, even with noobs flying it". I would expect at least a 1-1 performance.
Of course, the B-29 is the sole exception of that, for obvious reasons.