We have no winner. What we have is church of Christ (Campbellism) nonsense. The language found in Acts 22:16 is similar to the statement of Jesus when He took the bread and said, "This is My body.." (Matthew 26:26). The bread is only the emblem of His body, just as water baptism is only the emblem of the washing away of sins by the sacrificial death of Christ. Every time a believer is immersed he washes away his sins in the same sense that Paul did. Not literally, but ceremonially, pointing to the blood of Christ by which sins are actually washed away.Ananias said to Paul "What are you waiting for, arise, be baptized and wash away your sins, calling on the name of the Lord." Only Christ blood washes away sin, and baptism puts us in Christ's death where He shed His blood (Romans 6:3), BINGO! We have a winner!
As in Colossians 1:14, "through His blood" is a reference not limited to the fluid as if the blood has saving properties in it's chemistry and we contact it in the waters of baptism, but is an expression pointing to the totality of Christ's atoning work as a sacrifice for sin. The word "cross" is also used similarly to refer to the whole atoning work of Christ on the cross (1 Corinthians 1:18; Galatians 6:12,14; Ephesians 2:16).
Before mentioning baptism in Romans chapter 6, Paul had repeatedly emphasized that FAITH, not water baptism is the instrumental cause of salvation/justification (Romans 1:16, 3:22-30; 4:4-6; 5:1). That is when the old man was put to death and united in the likeness of His death, which water baptism symbolizes and pictures. Righteousness is "imputed to us who believe in Him who raised up Jesus our Lord from the dead, who was delivered up because of our offenses, and was raised up because of our justification" (Romans 4:24,25). Since believers receive the benefits of Christ’s death and resurrection (justification), and that through faith, believers must be spiritually united to Him (delivered and raised up with Him).Yes, He uses our "immersion" into Christ's death to kill the old man...entirely, and be raised with Christ to walk in newness of life.
If baptism is taken as the instrumental cause, then Paul contradicts what he had established before, namely that justification is by FAITH, not baptism. *Hermeneutics. Paul clearly teaches that what is signified in baptism (buried and raised with Christ) actually occurs "through faith." Christians are "buried with Him in baptism, in which you also were raised with Him through faith in the working of God, who raised Him from the dead" (Colossians 2:12). Justification on account of union in Christ's death, burial and resurrection is brought about “through faith” - and is properly symbolized by dipping the new believer in and out of the water.