I think a healthy Spurs team matches up very well with the Lakers, and that series would likely be decided by who gets the lucky rolls, and who is hot at the time.
And if they are able to add another big man, or upgrade another position, I wouldn't be surprised if they win going away.
I really think people have been sleeping on the Spurs all season. They just execute so incredibly well, and when they are healthy, are still one of the most talented teams in the league.