My 70-200 f2.8 II is my ONLY lens which needed no AFMA straight out of the box! I'm super pleased with how great it works on my 5DM3. My favorite lens, no doubt.
this is actually my experience with most of my other L lenses to be honest and in fact at first I thought my 70-200 f2.8L II was the same and needed no AFMA because it was already super sharp but actually doing some microadjustments just makes it even more accurate at nailing focus.
I've checked it over again and actually it's more accurate at +8 on the wide end rather than +10. there's very little in it really. I guess that's a testament to how sharp it is in the first place.