ETH plunged to 2019 levels before recovering but remains undervalued compared to BTC, according to CryptoQuant report.The ETH/BTC MVRV ratio indicates extreme undervaluation, historically signaling buying opportunities, but current environment differs.Fundamental headwinds affect ETH, including supply increase, reduced burn rate, stagnant on-chain activity, and waning institutional interest.Despite recent rally due to Pectra upgrade, experts warn that ETH's undervaluation may not lead to a quick rebound as in past cycles.