The 100x faster scenario is not really clear to me. Computers already "think" orders of magnitude faster for some things and orders of magnitude slower in other things. I am not sure this will be all that much more useful than the status quo. Unless they modeling a human brain than I see 100x faster being a useful thing to measure. Otherwise, I don't see speed increases being all that critical to making a superhuman AI.

I think networks of AI can become super powerful even without being nearly as smart as individual humans. AI will only need to approach certain aspects of humans IQ. It can still be much dumb than us in most ways. Most of human progress has been build up because of vague interactions and feedback loops via markets, religions, and nations.