ERC-4337 is a new way of using wallets on Ethereum. Instead of relying on the traditional kind of wallet, ERC-4337 lets you use smart contract wallets, which can follow rules and do things automatically. ERC-7702 is a recent Ethereum proposal that gives regular wallets (like MetaMask) temporary smart contract powers—without fully converting them.It’s not really a battle between ERC-4337 and ERC-7702; they actually complement each other. ERC-4337 gave us the infrastructure to run smart accounts, with bundlers, paymasters, and EntryPoint.