CNN has debate analysis looking at level of complexity of statements
Grade level: Biden, 7.8; Palin, 9.5 (Newspapers are typically written to a sixth-grade reading level.)
Sentences per paragraph: statistically tied at 2.7 for Biden and 2.6 for Palin.
Letters per word: tied at 4.4.
Ease of reading: Biden, 66.7 (with 100 being the easiest to read or hear), versus 62.4 for Palin.