I would disagree on this. As much as the hot shooting opened the game against Utah and LA, it also puts pressure on the other team to keep up.
Conversely, when the Spurs are not shooting well (Rockets) it really puts pressure on the defense to make up for it. And we didn't react all that well to that. All that said, that Houston game was an aberration (I think we shot 30% for the half).
What I haven't seen yet, is a game where the Spurs don't really shoot all that well and manage to win playing D. A grind it out type of game. Those games are a lot closer to what the playoffs will bring, and I thought we reacted really poorly to those games last season. I'm hoping this season is different with Thiago in there.