Counting qubits is not a useful metric. Google actually had to go back down from 72 to 53 in order to get their quantum supremacy experiment working. Also none

Counting qubits is not a useful metric. Google actually had to go back down from 72 to 53 in order to get their quantum supremacy experiment working. Also none of these machines are error-corrected, so they cannot run useful quantum algorithms such as Shor's or Grover's algorithm. It is still an open question whether large error-corrected quantum computers are at all possible.