How is this sexist?

This is from CNN.
This is the McCain campaign's response:

“Because of Hillary Clinton's historic run for the Presidency and the treatment she received, American women are more highly tuned than ever to recognize and decry sexism in all its forms. They will not tolerate sexist treatment of Governor Palin.”

This is what they were responding to.

“Well, my understanding is that Governor Palin's town of Wasilla has I think 50 employees,” he said. “We've got 2,500 in this campaign. I think their budget is maybe $12 million a year. You know, we have a budget of about three times that just for the month. So I think that our ability to manage large systems and to execute I think has been made clear over the last couple of years.”

Very sexist. This is incredible. 2+2=5.