The Comparison Rule
Do not ask whether QUAD is simply a bridge, storage network, DeFi app, explorer, or AI chain. Ask which surface owns the job and which proof can be checked.
Compare Core to public accounting and admitted-value state, not to a claim page or mining chain.
Compare Infra to proof-backed work and retained evidence, not to raw compute-reward marketing.
Compare Bridge to controlled passage and route evidence, not to automatic destination admission.
Compare Liquid to fast motion with settlement discipline, not to proof of final balance truth by itself.