He knows the Dims like her, but HE knows her heart. The Dims may be VERY disappointed in Ms. Meirs, and Dubya will have the last laugh.
No need to hit the Dims over the head out of pure meanness when he can sail Miers through with their approval, and have a justice that HE KNOWS how she stands MUCH BETTER THAN ANY OF THE DIMS. The Dims might be getting played here!