Yesterday the conclusion based on Q1 ratings data was that Headline News had supplanted MSNBC as the third-place cable news channel, thanks in part to rising star Nancy Grace. But the numbers are never that simple: On Tuesday night, MSNBC’s Countdown with Keith Olbermann beat Grace in the 8pm hour. Olbermann averaged 490,000 viewers, compared to 420,000 for Grace.

> Update: 7:45pm: Here are the full numbers for 8pm:

FNC: 1,895,000 / CNN: 564,000 / MSNBC: 409,000 / HLN: 373,000 / CNBC: 114,000