1. The quality on Google is really low. People use open microphones, no lighting and there is no real focus on content, curriculum or the credentials of the person speaking. That's what we bring to the table I hope: a great teacher, with a great lesson plan and high-end production (hd, audio, etc).
2. SEO lifts from Video include time spent on page, inbound links and overall value.
Also how does putting videos on pages help with ranking? Does google process video content? :/