Tiger every time. Lions regularly kill cheetahs, as do leopards so even a relatively small tiger would have little issue clamping on even the largest cheetah. read more
If the cheetah couldn't get away - for example, if it was a "cage match" - the tiger would likely win due to sheer size and muscle mass. It would be able to pin the cheetah and deliver fatal bites with relative ease thanks to its bulkier build. read more