What exactly was it that Scooter was allegedly guilty of? Do you remember?
It was "perjury" -- lying to a grand jury. But what did the perjury concern?
Specifically, Libby testified that Tim Russert had told him that Valerie Plame was Joe Wilson's wife and was a CIA agent. Russert remembered the conversation otherwise.
He said/he said. That's the whole case, in a nutshell.
And a DC jury, fervently wishing it was Dick Cheney who had been charged, was only too happy to find Scooter Libby guilty of...well, something.
Contrary to your assertion, there is no real evidence that Scooter Libby was guilty of anything.
I asserted that he wasn't guilty of anything, other than being to naive a person and cooperating with a political hack prosecutor.