Spurs didn't play the "pathetic Wolves" in the 2005 WCF; they nearly swept out the Suns, who had the best record in basketball that season.
I understand the argument that the Cavs are probably the best defensive team that the Spurs have faced this post-season. We'll see if that makes a big difference or not. I think the Spurs are probably as good defensively as the Cavs -- particularly because the Spurs have a major league shot blocker waiting at the rim for those who are able to get there. The question is which team's offense is going to be best able to exploit the weaknesses of the opponent's defense. I think the Spurs present a more varied attack and create dilemmas for teams with the way that their offense is structured -- I think those dilemmas and versatility make it hard for teams to just play the Spurs one way on defense. I guess we'll see over the next couple of weeks whether the Cavs can do vary their looks and affect the Spurs' offense more than than the Spurs might be able to limit the Cavs' offense.