Here's a pointed comment from TalkingPointsMemo.com:
SO WE'VE GOT Karl Rove's latest story, as recounted by his lawyer, Robert Luskin.
Rove did spill the beans about Plame in an effort to discredit Joe Wilson. Only he didn't mention the name 'Valerie Plame'. He only spilled the beans about 'Joe Wilson's wife'.
I'm no lawyer. But I'd hate to go into court with my case resting on that distinction.
And remember, the president has certainly known all of this from the beginning.
-- Josh Marshall
The other claim we can imagine Rove making is that he didn't know Plame was undercover. And here's another useful comment from TalkingPointsMemo.com on October 9, 2003:
As we’ve noted before, one of the best pieces of evidence that Novak (and thus his sources) knew Valerie Plame was a clandestine employee of the CIA was that he said as much in his original column. There he called her an “Agency operative.