Must be a math thing that is causing that problem for you. (My Storage) - (Their Storage) = (Not even close). Not going to look up the numbers for you since you can't do the math anyway, but I demo'd the FRJ. My side bags are at least twice as big, considerably longer, taller and much wider. Same for the trunk compared to the largest Givi, not twice the size but certainly a third bigger. And don't forget the two glove boxes I have up front.
Not knocking their bikes, awesome machines. They do many things better than mine does, but hauling around tons of shit isn't one of them.