I think the Spurs lack of performance in the Dallas series speaks volumes about their team. They played ONE game as a cohesive unit (Game 2) and they wiped the floor with the Mavs that night. Other than that, they didn't play all that well. At the beginning of this series, if you had told me that the Spurs win Game 3 without hitting a three-pointer and win Game 4 with Ginobili/Parker/Duncan going 9-34...I would've said you're crazy.
The role players (i.e. Hill, McDyess, Blair) picking up the slack is what has this team glaring with potential and has some calling them "dangerous."