Does a God exist?

[SteveII]

1) Content of the NT is internally consistent within itself and with the OT. 
2) More historical support for more actual documents written by more than one person
3) Historical support of first century church
4) Person of Jesus is a compelling figure
5) Observations of personal effect of Jesus in the lives of other people
6) Personal experience.

Five good reasons to believe in UFOs

• The long, documented history of sightings.
  
• Numerous modern sightings by credible, well-trained professional observers.
  
• Consistencies in the descriptions of purported alien ships.
  
• Possible physical evidence of encounters with alien spacecraft.
  
• Physiological effects on UFO witnesses.
  

You have a bunch of circumstantial evidence.  So do they.  Both cases are weak.  I've yet to see a difference.

You are comparing apples and oranges.I don't think it is reasonable to think the NT authors were simply mistaken (as there is ample reasons to think UFO people are)--especially with the additional evidence of the existing churches. The only plausible explanation of the contents being false is intentional deception. That would have been quite an undertaken and I think we would need to answer the question why?