What is unscientific is claiming that one account of an event which claims however many witnesses equals that many witnesses. Somehow I don't think you'd get away with that one in your court of law.
But you said they can't all be right. ???
Never mind.
I know at least one person who ticked...
Hang on, how can they not all be wrong?
Obviously they can't all be right because they contradict each other. But that doesn't mean they can't all be wrong.
I doubt there are 42 million Christians in the UK either.
Neither statement is true. We don't really know enough about how common life (of any type, let alone intelligent) is or isn't in the universe to say with any authority.