In terms of language usage, Biden used about 30% more passive voice than Ryan. Many believe that the passive voice is used to shade the truth, opposed to simple declarative sentences. Ryan and Biden both were relatively easy to understand according to the standardized algorithms coming in at 69.4 and 72.6 on the Reading Ease Scale. As for Grade Level, Ryan came in at 6.6, while Biden scored a 6.1. For comparison, Obama scored a 9.2 and Romney a 6.8 in their first debate.
(As a side note, Biden's score (6.1) was the lowest ever recorded in a debate, surpassing Ross Perot's previous low of 6.3).
Payack is president of The Global Language Monitor in Austin, Texas