The media coverage is clearly much larger for the FHI than the SI. Moreover, the media coverage for the summits frequently focused on Kurzweil style singularities and similar things.

The last Summit I was at, the previous NYC one, had an audience of close to a thousand that was relatively savvy and influential (registration records and other info show a lot of VCs, scientists, talented students, entrepreneurs and wealthy individuals) who got to see more substantive talks, even if those were not picked up as much by the media.

Also, one should apply the off-topic correction evenly: a fair amount of FHI media attention is likewise grabbing a quote on some fairly peripheral issue.