Though there is a difference between a cert signature (ML-DSA) and a challenge (ML-KEM), ultimately and fundamentally, isn't real key size still a relevant metr

Though there is a difference between a cert signature (ML-DSA) and a challenge (ML-KEM), ultimately and fundamentally, isn't real key size still a relevant metric for comparison. (Everyone dnvoted this like -6/-7. I guess they didn't understand the relevance.) IDK a terse analogy then: MerkleCerts + ML-DSA : ML-DSA :: Challenge (ML-KEM,) : ____ (ML-DSA) Merkle-signing cert trust roots is a security/bytes-transferred efficiency tradeoff. What is the difference in number of bytes seemed usefully relevant to me at least.