The Ward of the S6 at 168 would undoubtedly be favoured. Whether that's the same Ward that would step in the ring today and whether he could still make 168 is an unanswered question. As is Golovkins true ceiling... and Ward's.
GGG is not unbeatable.. so you should change that silly name. Ward will shut down GGG's offense and turn him into an Ordinary fighter! Ward Unanimous Decision Is the likely outcome.