They might not be the best Texas team overall, but Dallas might match up against the Lakers best, even though Kobe has been known to handle Dallas basically by himself.
Dallas has two big, long, bulky centers to combat the Lakers front court in Diop and Dampier. Now, not saying they're great players, but at least that's two big bodies at the center position to contest Bynum and Gasol. They also have multiple athletic wing players with Howard, Stack, George, Wright, Eddie Jones (if he avoids weight room equipment), Green (if he makes the team), Singleton (if he makes the team) to throw at Kobe.
Now, again, that's not to say Dallas is better than the Spurs or Rockets. They probably aren't. But, I think they might match up against the Lakers better than those two.