Most experts would favor a Siberian and Bengal tiger over an African lion."[21] John Smith Clarke, a British lion tamer, said, in a lecture on the fight between a tiger and a lion given to the Glasgow Zoological Society, while showing the actual fight on the screen, "in 100 cases out of 100 the tiger would always beat the lion. It was far more agile, it was not so clumsy in its movements, it was equally strong, it was equally armed, but it fought in a different way. The tiger very often fought rolling on its back and held the lion in its grip until it defeated him."[22] The BBC (2016), in a 3-round study of agility, strength and intelligence, favored the tiger in the case of intelligence, due to the time spent for a particular challenge.[23] William Mark Clark (1838) believed that the Bengal tiger was "more than a match" for the Asiatic lion.[24] National Geographic Channel's documentary "The Last Lions of Asia" mentioned that a Bengal tiger had a weight advantage of 50 kilograms (110 lb) over an Asiatic lion, and could kill a lone lion in a fight.[25]