Fusionstorm, it all comes down to execution. If Barnes missed that shot, the Blazers claim that was their plan. Teams pretty much have to pick their poison. Having Curry with the ball to kick it out to an open man is a common play.
I didn't watch enough of Mark Jackson coach, but isolation plays were pretty common back then when he played and that's how he learned to coach. You give your best player the ball on a one-on-one match up. To be fair to Jackson, the team he coached was very raw and just started playing together. And, I think Luke Walton could've drawn up the same play. Let's not drink all the Warriors Kool-Aid and put Kerr in the top coaching echelons just yet.