I think that it is 90% daily preparation by the coaches, 10% game calling with the exception of some really outstanding late game calls here and there that in reality could go either way. Just my opinion from years of experience (on this board).Okay, hear me out. The bottom line in sports is that the teams with the best players usually win. No one could have saved us Tuesday night. Duke's players were better than ours. No amount of adjusting could have helped. Duke has the top three picks in the NBA Draft and Kentucky does not.
Now, it does matter to an extent but more along the lines of if your team is capable of doing what the coach wants. Adjustments matter when you have players that can fulfill what you ask. On Tuesday, we had no one that could handle Duke's big three. The answer to that could be different in March. I hope it is. But right now, in November what can Cal do? He's won a lot of games here and the past tells me we'll be playing real good ball this Spring. And the Cal "haters" will slowly disappear.
Nick Saban isn't winning a title with a roster full of 2 stars. Bill Belichick isn't winning a Super Bowl with Nathan Peterman as his QB. A coach is only as good as his players.