Your NF and Bushnell have the essentially the same lenses - they come out of the same (LOW) factory in Japan (or at least a year or two ago they did). There may be subtle differences in coatings.
I have no idea from where the lenses came. I just know there is no comparison in side by side tests with everyone, except on guy, who has looked through the three scopes mentioned. Maybe I got the best Nightforce ever produced. For seeing detail at 521 yards the Nightforce needed 12X, the Swarovski 16 1/2X and the Bushnell 15 1/2X. The Nightforce displays the same superiority in low light performance over the others.
Often we get questions about optics and usually the posters gets things like, "I prefer the "X" brand or the "Y" brand." These answers tell us nothing.