Who would win in a fight, all the land animals or all the water animals?

WATER ANIMALS!! It's like an adult playing keep-away with a little kid that can only jump so high! For example, although a Cheetah is incredibly fast, it can only sustain that speed for 6 seconds before it overheats and has to stop. What good would that speed be against a sailfish, which can swim 68 mph? Now, if they could cooperate for long enough to cross breed, both land and sea animals would have something to reckon with... An animal with speed AND endurance!