And yet they sold for approx the same price proving that the people with the money to spend made a different decision than most of us would. Takes all kinds...
I think this is a bit of a label chaser scenario. The 9.2 superboy is, I would think, a very high grade for that book. I haven't checked the census, but that would be my guess. So there's a bit of the super high grade mentality at work, I suspect, that isn't really in play on the 8.0 MF, or at least not to the same extent. I think most of us on this thread (and most collectors in general really) would go for the bigger book in the lower grade over the opposite (ie smaller book in higher grade)... so the clean sweep isn't that surprising...