Comparativists (about mass) eliminate absolute masses from the fundamental ontological picture by virtue of a principle of economy, the “Comparative Razor,” which requires that only mass-relations, which are invariant under (metrical) symmetries, be considered fundamental. I show how this weapon backfires. If mass-relations are endowed with a standard (multiplicative) concatenation structure, power-transformations become (metrical) symmetries, leaving comparativists prima facie unable to disting