Admittedly, I have not mic'd & compared the dimensional specs of my watch to some gens, but I have compared them visually (I am pretty anal about such things), & whatever differences may exist can be attributed to polishing &/or normal wear. Certainly, there is nothing about the size/shape of the lugs that would draw attention to them under normal conditions. There are far more salient inaccuracies on these reps than lug dimensions, which would likely require a micrometer to detect anyway.
If you feel there is a serious inaccuracy with the lugs, post the official dimensions & I will compare it to my watch.