What it's doing is searching through circuit architectures, not accelerating the circuit simulation itself. If you have small quick circuits that's fine, but if

What it's doing is searching through circuit architectures, not accelerating the circuit simulation itself. If you have small quick circuits that's fine, but if solving the circuit once is a hard enough problem (which is true in the problems which we are targeting) then this problem would be infeasible with Google's algorithm because it relies on whatever simulator to exist. So it's just different methods targeting completely different sets of problems.