truth be told, a tiger would win in reality, although a lion has broader shoulders, the mane adding to its size, the tiger has the size advantage being the biggest of the four cats, also, its hind legs are more powerful plus the tiger hs larger canines.
as for the great white vs crocodile debate, if it was a younger im sure the croc would have no issue in tearing the shark apart, as for a full grown white shark id like to see the croc fit it anywhere in its mouth, bearing in mind sharks always ambush in predation its highly undoubtful that the croc would get a chance at swiping its tail at it, ive seen videos of crocodiles being mamed by tigers. sharks are not as stupid as they seem, not white sharks anyways, ever seen the video of the two simultaneously attacking that surfer?
environment isnt really an issue with this as you arent going to find a white shark anywhere but the ocean, nowhere near estuaries were crocodiles swim out and rarely ever near shallows.
Originally posted by Rogue JediFaster, yes. But Crocs and Gators have the strongest bite strength in the world, mane. Sharks have serrated teeth, whereas the Croc has blunt ones, so it's even.
thats kooky talk. sharks are faster and have a stronger bite.
Edit: A Salt water Croc is the one that would most likely be the one to fight a Great White, they are also longer(30 feet). I saw a vid of a Polar Bear pulling a Killer Whale out of water.
As for Lion vs. Tiger:
http://www.youtube.com/watch?v=FcboSzWhqvA
http://www.youtube.com/watch?v=1VkhjzYt6MM
And as for Shark vs. Crocodile:
http://www.youtube.com/watch?v=3ZLIUzyRwwc
As a bonus...here's a Liger:
tigers are much larger than lions and better killers while lions are better fighters
Male African Lion is around 400 pounds
Male Bengal Tiger is around 600 pounds
Male Siberian Tiger is around 800 pounds
But Kodiak/Polar/Kamchatka Bears are the largest at around over 1000 pounds and could knock the head off a tiger or lion with one swipe with its paw.