As for my final prediction, it may come as a surprise after what I laid out above but I'm going to predict the Spurs advancing in five games. While many are forecasting this to be an epic battle that will go the distance, I don't see it that way. These two teams are so different that I just don't anticipate a long, drawn out battle.
If the Thunder's offensive superstars prove to be indefensible and the Spurs can't stop their parade to the free throw line, Oklahoma City will probably make short work of the Spurs. If San Antonio is going down, I think it'd be in flames.
Conversely, if things begin to roll in the Spurs direction, I believe this recent dominance will continue. As long as the Spurs can slow OKC's big three -- even a little bit -- while limiting fouls, that will create the needed fast break opportunities that will kickstart the offense that will commence the avalanche.