A voice I heard in my head is evidence... but is that good evidence? Would you accept the evidence that someone heard a voice in their head, and knows that President Obama was just assassinated by a man named Barney Hills based on it? Probably not 
So if you think about it... there is a ton of evidence both for and against Christianity... but there is only a little bit of what atheists might think to be good evidence for it... while there is a great deal of what the average atheist probably thinks to be good evidence against it
So it is a lack of perceived good evidence that Craveman is referring to.

So if you think about it... there is a ton of evidence both for and against Christianity... but there is only a little bit of what atheists might think to be good evidence for it... while there is a great deal of what the average atheist probably thinks to be good evidence against it

So it is a lack of perceived good evidence that Craveman is referring to.

Please give me a home where cloud buffalo roam
Where the dear and the strangers can play
Where sometimes is heard a discouraging word
But the skies are not stormy all day