The Spurs run a good system but with Ginobili sidelined they don't have the firepower they need. The Heat have a great collection of role players, and surrounding Bosh with that talent is better than people realize. Bosh and those role players knocked down a good amount of threes, SA struggled beyond the arc. I think most nights given the lineups SA would win. But in basketball sometimes shots just go in, other times they don't.
There was a little blurb of news that didn't run around much a couple weeks back when Bosh told a reporter he thought he was a future HoFer. It is no small thing to sacrifice numbers and touches, along with a chunk of cash, in order to compete for a championship.
He gets hammered for not getting enough boards and being the biggest reason the Heat suck at rebounding this year. He plays 15-20 ft from the basket on offense to open the lane for Lebron and Wade. Opposing bigs either let him shoot uncontested jumpers and watch him knock them down better than any big in the game right now because they sink to help, or wing guys rotate down instead, which just opens up Battier, Allen, Chalmers and Lewis for open threes.
The super efficient Heat offense we have seen this year certainly needs Lebron as its centerpiece, but any other big in the place of Bosh clogs things up. That also means he is nowhere near being in position for offensive boards. It is a design that chooses hyper efficient shots over rebounds.
On defense his footspeed allows him to hedge and switch on the PNR where other bigs would struggle. Having Battier or Lebron be able to rotate down to his man often exposes them to rebounding deficiencies on the defensive end of the floor too. The Heat play better "on a string" on defense than anyone, and their interchangeable parts along with their commitment to rotation loses rebounding battles. Again it is a calculated risk as they keep opposing FG % down and force a ton of turnovers.
What Bosh does is integral to their success, but unlike Lebron or Wade, he sacrifices the most and takes the most blame for any supposed deficiency.
All in all, it is nice to see him carry the load like this from time to time. Just to remind people, "oh right, he is one of the best bigs in the game".