Well, it does not seem like fujitora is a logia user, quite the opposite, he seems to be a paramecia user. My guess is that oda no longer plans on the new generation of admirals being more varied than the previous one.
So far it seems like fujitora uses a gravity paramecia. If that is the case then I wonder if he was made an admiral due to his fruit being a sort of counter to BB's own darkness fruit. As far as we have been told BB's darkness is actually gravity. In this regard, perhaps fujitora would be ideal to deal with him? I mean, as a gravity manipulator he would be capable of defending against gravity attacks perhaps. Well, BB seems to be able to generate darkness/gravity so to speak from his own body and fujitora seems to be able to create spots where gravity is particularly strong (he made a hole in the ground rather than attracting things to himself) so perhaps he can cancel BB's gravity by carefully placing opposing gravity spots in a battlefield. If there really are 4 admirals now (as the nue thing would suggest if true) then perhaps each admiral is supposed to be a counter to one yonko.... at least the numbers match.