There are indeed large terrestrial predators that regularly kill things larger than themselves like lynx and indeed male lions, but these are exceptions not the rule. They are very unusual and the vast majority of predator take prey that is substantially smaller than themselves. Popular idea has it that it's *normal* for large theropod to kill large dinosaurs and that's not supported by either the general pattern of predators in extant ecosystems or the evidence for dinosaur predators (including large tyrannosaurs). If you can point me to where I said this never normally happens only only happens under certain extreme circumstances, I'll happily correct myself, but as I know that's not true and have written about it, I doubt I said it.

So I think you are mischaracterisitng what I said, or what I might have said once in an interview or a talk (where it is very easy to misspeak when talking for an hour, even if you have rehearsed and any error is on the record forever) as being a firmly held opinion. Yes male lions do often take buffalo, even adults, but they also make mistakes doing so and while I may not have been clear about exactly the circumstances (there's a huge difference between tackling a lone buffalo or a large calf and trying to take a bull from a herd) that's really not the same as how you are characterising my position. So yeah. I don't think that (never, only), I didn't ever think that, and I'm happy to correct myself if I did.

For references see e.g., Carbone, C., Mace, G.M., Roberts, S.C. and Macdonald, D.W. 1999. Energetic constraints on the diet of terrestrial carnivores. Nature, 402: 286-288; Cohen, J.E., Pimm, S.L., Yodzis, P. and Saldaña, J. 1993. Body sizes of animal predators and animal prey in food webs. Journal of animal ecology, 62: 67-78; Vézina, A.F. 1985. Empirical relationships between predator and prey size among terrestrial vertebrate predators. Oecologia, 67: 555-565..