Are Atheists as skeptical of Dawkins, Harris, Mahar and other Atheists, as they are of religion?

Absolutely. I tend to disagree with the logic all three use, even if I come to many of the same conclusions. There is a great deal of difference between looking for the truth and trying to demonstrate that God does not exist. All three of them start with the implicit premise that there is no God. That's where circular reasoning enters the picture. I try to argue from the evidence in both directions. I come to implausibilities much more quickly when God enters the picture, and I am thus an atheist.