Update: I now believe I was over-simplifying things. For two delegates I think is correct, but in the parliamentary model that corresponds to giving the theories equal credence. As credences vary so do the number of delegates. Maximising the Nash product over all delegates is equivalent to maximising a product where they have different exponents (exponents in proportion to the number of delegates).
Update: I now believe I was over-simplifying things. For two delegates I think is correct, but in the parliamentary model that corresponds to giving the theories equal credence. As credences vary so do the number of delegates. Maximising the Nash product over all delegates is equivalent to maximising a product where they have different exponents (exponents in proportion to the number of delegates).