From a technical implementation perspective, PBS, while addressing certain MEV issues, has revealed many drawbacks in practical applications—high verification overhead, complexity, and the fact that the centralization risk has not been truly eliminated. In contrast, the TEE solution provides more direct privacy protection and transaction isolation capabilities through a trusted execution environment, with better execution efficiency. Given the current trade-offs, the design approach of TEE seems to better align with the original decentralization intent of blockchain, at least with fewer pitfalls encountered in engineering practice.