Great Analysis.
I'm very skeptical of this Professor. We've been down this road before, where social "Scientists" come up with studies and polls that we find out later were results driven and highly suspect.
IOW, I think the professor is pulling numbers out of his hat.
Well, that's a very real prospect. Then again it may be a carefully run process where other results could be obtained by crafting the study differenty. I don't trust these things, and when someone starts quoting them I lose respect for the commentary.
BTW, thanks for the compliment.