First Lady’s convention speech seven grade levels higher than Ann Romney’s

Just a posting fool today -- the First Lady and the Dem Convention got me all energizer bunny-like, I guess.

At Raw Story:

The speech First Lady Michelle Obama delivered at Tuesday night’s Democratic convention read at a twelfth grade level, according to an analysis by a University of Minnesota political scientist, making it, by that measure, the most complex speech delivered by a presidential candidate’s spouse at a nominating convention.
By contrast, the speech delivered by Republican presidential candidate Mitt Romney’s wife, Ann, checked in at a fifth grade reading level. Romney’s speech marked the lowest reading level for a spouse’s convention speech since the practice first began in 1992, according to Eeic Ostermeier, the Minnesota political scientists.
Ostermeier reached his findings using the Flesch-Kincaid readability test, a metric that rates sentence structure and difficulty of word use, and then computes numbers corresponding to grade levels to indicate how verbally advanced a given text is. For example, longer sentences and words score more points, while monosyllabic words score fewer points.

Why does this make me laugh, even though I'm not surprised?