Well, as this thread seems to have gone ubiquitously off-topic, I might as well reply to this here.
Acts 2:36 is simply a bald assertion. Any credibility it has relies solely on what credibility the listener gives to the Bible. Those who accept the veracity of the Bible are already believing Christians. Those who doubt their faith in all probability doubt the veracity of the Bible. Those who are skeptics have no good reason to accept the veracity of the Bible.
Therefore it would seem obvious that the bald assertion of Acts 2:36 has zero apologetic value.