The Spurs guarded Lebron in Game 1. Lebron James is one of the strongest players pound for pound in NBA history and is a beast driving to the hole, but if you stay in front of him, and clog the lane, he settles for jump shots. His three point shot is getting better but its still not superb. His mid range game has always been suspect, and he isn't great with his back to the basket.
His game outside the paint is good but nowhere near the level of Durant, Dirk, Kobe, or Pierce, or even KG for that matter.