[Joe Ross]

Here are the readability scores for both candidates closing remarks using several well known methods.

Kerry:
Kincaid: 5.8
ARI: 5.5
Coleman-Liau: 7.8
Flesch Index: 81.9
Fog Index: 9.3
Lix: 32.0 = below school year 5
SMOG-Grading: 8.9

Bush:
Kincaid: 5.0
ARI: 4.6
Coleman-Liau: 9.8
Flesch Index: 78.8
Fog Index: 8.5
Lix: 33.4 = below school year 5
SMOG-Grading: 8.8

You can google for those different readability indexes if you are interested in how they are derived.