Dubya had continuous and continual media and (for example, code pink) assaults. IIRC, wierdos camped out near his Texas home. There was the Plame fiction, the late-night "comedy" routines that would make up quotes so Dubya would sound stupid, the implied (again, IIRC) movie script bad things, and much, much more. Yet Dubya remained undaunted, he persevered to prosecute the war on terror, and kept us safe.
Dubya never, ever would have resigned. He was, and remains, courageous under (metaphorical) fire.
Sarah was so unfairly treated (as you rightly point out.)
I wish that Sarah would have remained courageous, and not have should have resigned.
That she did resign her governorship, however, disqualifies her from the position of Commander in Chief. I wish I could put this in a more positive light.
Apples and Oranges
Neither you or I know what would’ve happened had President Bush been open to lawsuits or ethics complaints with no assistance from the government to help him defend himself or if something else had happened. Also, President Bush and his advisors, such as Karl Rove, gave us Mr. Obama or no one did.
Media attacks are one thing. Having to personally cover the costs of Court cases based on frivilous ethics violations is something entirely different. And it wasn't just the cases of Sarah having to come up with the money to defend herself. She saw that staying in office would bankrupt the members of her Administration who were also being charged with ethic violations, simply because they worked for HER. She knew that the issues on which she ran for office, for which she was elected, would still be supported by her Lt. Governor, so she resigned the office and turned it over to him. The people of Alaska were not left in the lurch when she left office.
George W. Bush had to endure ugly things being said about him. He didn't have to PERSONALLY pay for court cases to defend himself against the media attacks. THAT is the difference between him and Sarah.