That would depend on what kind of bombers we talk about, and what kind of approach to the target we talk about. Ju-87s, -88s, B-25s, Vals, Dauntless, Skuas - all well known to hit a single target (sometimes scoring multiple hits in single pass), even the moving ones. Comparing the complete PGM system (a bomber being just a part of it) with a bomber of the ww2 is comparing apples oranges.