A Kamakura period blade will always be considered more 'worthy of preservation' than a shinshinto blade even if it has some minor flaws, simply due to the age, quality of forging etc. And then within shinshinto, it has to compete with blades by the likes of Masahide, Naotane, Kiyomaro etc. like this blade for example http://katananokura.jp/SHOP/1406-K02.html
I hope some more knowledgeable collectors of Juyo/Juyo candidate blades would chime in here, on whether this blade is worth a punt at Juyo.
But at the end of the day, to put things in perspective, we appreciate the beauty of swords, not necessarily their level of paper.