Zero seems sort of flat, Diet has more fizz. As far as flavor, Zero is closer to regular Coke. Didn’t know Zero was directed at men.
But how would anyone know what the difference was when seeing the 2 side by side on the shelf? Now they have a new goofy thing going on with large labeling on their 2L bottles reading "Family" and other such things, as opposed to "Coke", or "Coca Cola".
And check out their horribly designed/stupid website!