pound for pound
1. When considered side-by-side at an equal weight. Pound for pound, you get much more efficient heat output from wood-fiber pellets compared to coal.
2. In combat sports, especially boxing, adjusted according to differing weight classes. Pound for pound, Lewis is the superior boxer any day of the week.
pound for pound
[Usually of value, quality, strength, etc.] considering the amount of weight involved. Pound for pound, a dog fed properly is much stronger than a dog that has to fend for itself. Pound for pound, there is more food value in beef than in chicken.