This is just my own personal take completely. I do believe in degrees of crime. I think in the PED's scale what Pettitte did was clearly wrong and punishable, but just not in the same category as what Clemens did. Clemens used PED's to win 3 Cy Young awards and then denied it to the world. Maybe Pettitte doesn't look so bad to me because I compare him to Clemens. And I probably like the fact that he ratted on Clemens.