Are lions more successful hunters than cheetahs?

Yes, lions are much more succesful at hunting than cheetahs. I was recently at the Shamwari Game Reserve and our guide pointed out the carc of an full-grown Eland antelope. She explained that the kill would have had to be done by a lion as cheetahs aren't strong enough to take down an adult Eland. However, a cheetah may be able to eat a baby antelope.