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, that 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 distinguish a possible world and its duplicate where mass-relations are uniformly squared. Then, I considered possible exit strategies, which unfortunately either rely on hidden absolutist assumptions, or leave comparativists and absolutists on equal footing.