They want to ruin lion's reputation,aren't they?do you agree?

i've seen some videos sayin' a leopard killing a lion,a tigeress killed a male african lion,a...isn't it possible for them to make a very small poor male lion and a very big tigeress to fifgt?what about one of the biggest leopards in the world and one of the poorest lions in the world?or an unhealthy lion vs a boar?in a zoo,i compared male african lions and male bengal tigers next to lions' cage.tigers were ralativelty smaller than lions and their claws weren't any bigger than those of lions.i think lions are delibarately understimated.do you agree?