I never claimed that in Acts 2 that Peter preached Jesus the God.
but... since you asked:
Acts 2:24
Whom God hath raised up, having loosed the pains of death
John 2:19
Jesus answered and said unto them, Destroy this temple, and in three days I will raise it up
John 2:21
But he spake of the temple of his body.
Who raised Jesus from Death? Jesus or God? Either Peter was wrong in saying God raised Him up, or Jesus was wrong in saying that He would raise Himself up... or Jesus is God.