That's because you probably haven't met anyone who knows to gun properly, Booz.
I guarantee it - if its someone like 999 or tatertot, it doesn't matter if you are overhead, under, sideways, or HO. You may be able to knock out one~two buffs in the first pass, but whatever your approach, you are gonna be hurt, and really bad.
The only way to really safely knock buffs out, is to go at least 3 vs 1. Three interceptors against one formation, all of them approaching at different directions.