It depends on who gets the first hit mostly in the wild. Tigers will tend to hunt smaller crocodiles they can find, but a big enough croc will try for a tiger same as it would anything else. It's real hard for a croc to actually get the first bite on a tiger cause of cat reflexes though.
I was kind of sad when I learned that during the northern gold rush they used to ship animals up there to fight for people’s amusement. They had lions and tigers too.
Bears beat the big cats 100% of the time… No contest.