I'm going to continue with the Dirt Bike oil. Coming from off-road, I know the abuse enduro and MX bikes take. Good enough for them, perfect for me.
I understand the trade-off being more frequent oil changes. Not that I would ever ride a bike 9,000 miles with the same oil.
It seems strange that people discussing oil offer conclusions without information to demonstrate their assertion. Seems emotional rather than informed. My analysis of the attached test results, oil manufacturer specifications and Owners Manual pages may be all wrong. That said, my conclusions are based of an analysis of the attached information, over a lot of years of looking at similar data, and without emotion.