That Amazon page is funny.
06wrxtr4me - be careful saying certain products are equivalent just because of certain matching specs.
I have another data point. Took advantage of warm(er) weather over the weekend and change my transmission fluid. I didn't have the ingredients for the full cocktail, so tried Amsoil Severe Gear 75-90 (SVG). It's not as good as fresh cocktail, but much better than what I remember from the stock fluid. Within the gap of performance between stock and the cocktail, I would place SVG at about 65% there. A lot "freer" than stock, easier to get into gear (like reverse) when stopped, and can get into 1st while moving and double-clutching, but syncros don't grab as fast on both upshift and downshift.