Buy or Sell: it is literally completely over for the Miami Heat, the Mavericks are guaranteed going to win?

the 2011 NBA Championship, the Mavericks only need to beat them 1 more time in which Game 6 will be a home game for the Miami Heat, the Heat need to win 2 straight games against the Mavericks, which would force a Game 7. LeBron and the Miami Heat do not have any Killer Instinct, Mental Toughness that the past NBA Championship teams had.