I agree they're not the 2011 Spurs. The D has been greatly improved since then. But Pop has a difficult job balancing that rock solid defense with also a consistent offensive output.
We held up Miami to under 100 pts for two games in a row, playing Beli, Boris on Lebron, Mills, etc, even with them shooting 52% this last game. The defense is there for long stretches. But if we can't score 100+, we can't win. All the previous series have been more or less using a combo of our potent offense with our solid D to put pressure on the other team's offense. I don't think Pop is going to change much from here on out.