Reno - 1:52 pm on May 16, 2011 (gmt 0)

What's the difference between our two sites?

You theory may enter into the equation, on the basis that the hammer hits the nails sticking up the highest. But just to be clear, have you analyzed some of the other differences? You say the content is similar but presumably you are using different hosting services? Dedicated or shared? What about page speed download times? Backlink profiles? etc etc. We know there are hundreds of factors, so there's more to the picture than just content. And even though that may be the primary, all the other stuff will add up so will inevitably make a difference in the outcome.

.......................