Fox Business Network ran ads in the Times and Wall Street Journal this week mocking rival CNBC for showing informercials during a heated weekend in the middle of the Wall Street meltdown. Fox concluded: "We own this story." Not quite. Financial panic did grow the year-old cable network's tiny audience to the point where it could be rated by Nielsen for the first time. But the results won't add any swagger to the step of Fox News chief Roger Ailes: Fox Business peaked at about 81,000 average viewers. During the same period, when Congress voted on the banking bailout Monday, CNBC averaged nearly 900,000 viewers, the Times reported this morning. It appears Fox will need to sweat it through many more weekend shifts to catch up — and pray for a bit more panic, for good measure.