Who would win in a fight - an Alligator or a Crocodile?

How are Gators and Crocs different? How long have they been around? How are mean ol' Gators and nasty Crocs beneficial to the planet? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.