The only Aus 6 Enduras were all steel, correct?
It should be a bit tougher steel but obviously has less wear resistance than VG10. It is a good, clean steel and has fairly decent corrosion resistance. Recall Aus 6 has been made in knives up to 9 inches I know of ( old 2nd generation SOG Tigershark) and is not a bad steel at all. It's just designed to different specs for a different use. That doesn't make it better or worse any more than a station wagon is better than a 2 door coupe. It all depends on the perspective.
When it was being produced I don't recall many complaints about the Aus 6.
Aus 8 is similarly called a bad steel by some. If it was I don't think you would find it in fairly expensive Moki's and Al Mars. As in all steels a great heat treat makes it perform better. Try a Al Mar, than try the same steel in a CRKT and see if you notice any performance differences.
And yes, I usually prefer VG10 to Aus 6 or 8 in smallish ( up to 4 inch) folders due to greater levels of wear resistance yet ease of sharpening. It has good edge stability for my type uses too, but so do Aus 6 and 8 if done properly.
Joe