If there is a choice, this is the correct one: Take the LSU cake with the Bama frosting. The purpose of the frosting is to contain and shape the cake, and Bama is a lot better at playing contain than LSU is. The purpose of the cake is to be moist, delicious, and bad for you — all things LSU (and Louisiana in general) are better at than anyone.
If LSU fans are watching and waiting to see you cut into something and the worst outcome is that the cake is LSU colors?