market cap comparison

My reference is p17 of 23 of the Investors Presentation dated 9/12/2010 by PDY.
If we compare Range Res resource of 650mt and their Market Cap of $853mil,it means with a resource of 500mt,we could expect a Market Cap of some $656mil.
However,PDY,s Market Cap is only a small $23mil,which means we are behind by a factor of 28.5. If we allow for PDY,s 70% interest,we are behind by a factor of 20!!
Our Market Cap should be $460mil or there abouts. You work out what the s/p should be--hint/its well over double figures --cheers