Haha sorry I got you all bum hurt about my past experiences and opinions.
But here's another opinion that actually may come close to your actual question I say opinion cause i dont know the real answer but I would say that the super syn has different or more additives in it and if it talks about big displacement twins. Maybe they cater more for those types of motors like yours. And if the other one doesn't mention anything like that I personally would go for the more your bike specific oil.
Aaaand I have a 2011 5.7. Could I do that as well to read codes?