Was Cannibalism more Common among Neanderthals, or Homo Sapiens?

I know that there is evidence that both species of humans practiced it, amoung themselves and each other. But which was more common to find, Homo Neanderthal sites with evidence of cannibalism, or Homo Sapiens sites from around the same time with evidence of the same?
 
Pretty sure that would be Neanderthals, which appeared to cleanly and professionally strip their corpses clean of meat. Of course, there's no direct correlation between that and eating them; no toothmarks on the bone and whatnot, so it's possible that it was just a weird burial rite.
 
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