Because what is happening now is likely not going to ever happen again. All the Heat have to do is win one game in San Antonio.
Heat will still win this. Lebron has sucked balls for 3 straight games offensively. He's shooting unlike vs. the mavs, so he will figure it out. And the Spurs cannot stay this hot from 3pt all series. They're breaking records, and making 3s 4-5 ft beyond the 3pt line. Plus, Parker may be injured.
It's just one game. I don't think this will shatter the psyche of the Heat and doom them in games 4 & 5. Also, if TP isn't 100% going forward, the Heat will win the next 3.