When the Brooklyn Nets acquired Kevin Garnett, Paul Pierce and Jason Terry last summer, Mikhail Prokhorov said, “Today, the basketball gods smiled on the Nets.” Neither Garnett, Pierce nor Prokhorov was smiling after the Miami Heat eliminated Brooklyn in the Eastern Conference semifinals in five games. “The only reason we came to Brooklyn was to win another ring,” Garnett said. In retrospect, Brooklyn took a gamble that didn’t pay off. The Nets gave up a king’s ransom to acquire Garnett and Pierce to