Wiktionary
pound-for-pound
a. (context sports boxing English) A comparison of fighters' (usually boxers) skill levels, regardless of what weight class they are in.
Usage examples of "pound-for-pound".
The immense interlocking neurological networks of the Eater, spun of sheer gossamer magnetic fields and filmy plasma, had far higher information content than even the human brain, on a pound-for-pound basis.