I still say the comparison is silly. like asking if a Kodiak bear or a great white shark would win, so many depends upon it makes no sense, which is better apples or oranges.?
Depending on the environment either or both have problems, now if you want to compare apples and apples lets talk great white and killer whale...
And by the way, no crocodilian has sense organs that even come close to comparing with a shark, a shark can sense your beating heart by the electrical impulses from far away, in the open ocean a crocodile would be in serious trouble, in an estuarine environment the shark would be in more serious trouble...
It would almost certainly depend on who grabbed who first...