The EPA has a web site that lets you look at the numbers:
http://www.fueleconomy.gov/feg/calculatorSelectYear.jsp
Although the article is technically correct, showing only the individual vehicle percent changes is misleading. The ratios between any two vehicles, the comparison function of EPA ratings, does not change as much as the "25%" hybrid change. For example, use the Chevy Aveo, CNW Marketing's Prius killer:
29 - old EPA, Aveo automatic
55 - old EPA, Prius automatic
189% Prius MPG is better than Aveo under old EPA
26 - new EPA, Aveo automatic
46 - new EPA, Prius automatic
177% Prius MPG is better than Aveo under new EPA
But in reality, the price of gas is the real determinant about buyer preference. So as the price of gas goes up, even the slightly reduced hybrid advantage will win, hands down.
Bob Wilson