You're right that the comparison won't work for everyone. Here's another: Franz-Josef-Dickhut, currently the 54th strongest player in Europe[1] just won 3-1 against Zen, a top program. He did the same last year against CrazyStone, another top program. There are strong European players, but much fewer than in China, Japan, Korea or Taiwan. So there are thousands, perhaps even ten thousand humans still stronger than the best programs.[2]
However, the ELO figure seems high to me. A go handicap stone is probably more than 100 ELO at those levels, because high level players are good at conserving small advantages. Additionally, the players in these exhibition matches are usually themselves not the top players in the world. For instance, Zhou Junxun or Ishida Yoshio are two I recall off the top of my head.[2]
[1] http://europeangodatabase.eu/EGD/createalleuro3.php?country=...
[2] If you know how many humans can run a 2:45 marathon, let me know! I know Boston lets you in with a 3:05 time if you're 18-34, and tens of thousands of people run that (some of them are older or women, but many eligible people don't compete...). I'm kinda spitballing on the exact times, but that's roughly how I want to do the comparison.
[3] (http://www.goratings.org/).