There are not really any PC (motherboard) chipset (specific) drivers at all in AROS. Are there in other (better, more stable, running more perfectly?) hobby PC OSes? Haiku? Reactos?

If I'm so wrong, how would Bigfoot describe the effort/easiness/speed needed to port from one x64 PC motherboard to another completely different x64 motherboard. Compared to the effort/easiyness/speed of porting from one PPC machine to a different PPC machine. As he now has done both.

same
a little bit easier
easier
much easier
much much easier
10 times easier
?