
Mathematically agreed, Fan Hui is around 3000 Elo right now, AlphaGo has 80% win rates against Fan Hui which is probably about one stone stronger (3250 ELo), and Lee Sedol is sitting at 3500 Elo. Two stones stronger will make AlphaGo rocketed to 37xx Elo, the highest rank.
I've read the new interview from the Guardian, AlphaGo doesn't even have the Christmas break, poor her.