Just in case anybody ELSE has issues, I'll refute 2 major points here:
1) The big bombs were later modified with streamlined cones, tails, and fins.
Refute: This was NOT for accuracy's sake! The intent was to speed these things up so fast they plowed into the earth and the explosion created EARTHQUAKES from below. That's not because they were trying to make the "huge bombs" any more accurate. Totally different reasons. Deeper the penetration, better the shock wave.
2) You don't see inaccuracy on other bombs in this game!
Refute: You don't bomb enough, then. All you have to do is watch your bombs as they fall. They scatter like the wind. As much as aircraft guns have a cone of dispersal, so do bombs. This is most evident on the Ju88's external bombs (perhaps since they are right next to the bomb sight and very visible when falling? Maybe because they are extrnal?). There is indeed a bit of dispersion in these bombs as soon as you drop them. There is also dispersion in the 4k cookie. I've missed by a lot more than once with it, even when properly calibrated. The blast radius maybe makes you THINK it's more accurate than it is. You can still miss and do a lot of damage. Doesn't negate the fact you missed, eh?
That is all I wanted to add. The rest of the discussion I and the PNG I won't comment on.