Scott Aaronson now has a detailed analysis and covers the IBM claims as well: https://www.scottaaronson.com/blog/?p=4372 https://www.scottaaronson.com/blog/?p=4

Scott Aaronson now has a detailed analysis and covers the IBM claims as well: https://www.scottaaronson.com/blog/?p=4372 https://www.scottaaronson.com/blog/?p=4372 The high order bit is that the IBM claims do not cast much of a shadow over the claims of quantum supremacy and still show the same exponential difference.