"HubScores mean nothing outside of HubPages"
although this is true, is it not correct that higher hubscores lead to more internal links from hubpages.com itself?
ie the more pages the hub shows up on these /hot/ pages etc, the more internal links the hub gets credited for in Google, and hence the stronger it gets in relation to other hubs on the theme with lower scores?
hence I believe that in general, over time, higher scored hubs would probably perform better in Google than the same hub with a lower score, and hence less internal links?
haven't tested this, it would just seem to make sense.