This is an oversimplification. The first outfit to use the .096 flash hole was not Wolfe, but Frankford Arsenal around 1880. It was to duplicate the cross sectional area of Benet Primimg, not Berdan. The problem with the primers was not power, but duration. Wolf was aware of all of this, and spelled it out in detail.
Having said that, it must be said that we now operate under different conditions than Wolf did in the 90s. The Popularity of Swiss powder has brought a new dymanic into these loadings. Much as with Smokeless, different Black Powders react in different ways. Swiss seems to reward light compression, and lighter powered primers. Wano based powders seem to like standard primers, while standard Goex rewards heavier compression and more powerful primers. Heavily compressed loadings like the M1873 rifle load like the larger flashhole. IF you use a smaller powder grain, and back off the load by 5 grains, you may get equal results with the modern .081".
Wolf wanted to recreate the Milspec loadings of the M1873/1884 rifle and carbine loads. He did. If you load as he did, you will get the results he got. Can you tailor your loadings to specific rifles and powders to achieve better accuracy in your particular weapon? Probably.
Wolf simply provides an historical, technological starting point unique to the American Allin breech rifles. How the US Army loaded these cartridges, how they used the sights provided, and how they expected the weapons to perform.