I recall earlier in this thread or another one like the older Woodshop thread, doing the addition, including 4.25 for truck areas, and the figures just not adding up to what was said to be the overall length of a number of boards, so it wouldn't be that different looking at those charts either.
Either way, from having and skating the 8.38 and 8.5 in every shape they have had, I think they all have their place for those who are into shorter, medium, longer boards and all that.
Come to think of it, I have even had the 8 and 8.25 although they were for the shop, not for me to skate myself, but I have had a stand on all of them and they all sold, so people have liked them as well for the size, shape, etc.