Probably not faster if I have to guess. The nuances of why 19 is better than 18 are likely indistinguishable from noise when they play against someone at a much lower level (i.e. any human).
Go, on the other hand has a nice handicap system (which doesn't change the nature of the game too much). One can have a fighting chance against a much stronger player with enough handicap (Upto 9 stones). In Chess terms, an IM can have a _decent_ game against a GM. Probably lose. But the GM has to work for it.