Yeah and I bet on Dragon san ^^ But to be honest I don't know why they will ever have an all out serious fight
maybe cause Shanks don't trust Dragon and his ambition ... he fear a world without CDs would turn to chaos so he fights Dragon if you think about it ... Roger did the same thing ... he fought in favor of CDs for what ever reason
But to be honest I don't know why they will ever have an all out serious fight