I don't think that's a great reflection of what happened. The Kings were actually up much of the earliest portion of the game and only down by 3 after 6 minutes. They got beat by 9 in the last six minutes of the first.
But I think it's wrong to think that since the Kings were +2 after that point that they were the better team. Denver got up big, then let up and allowed the Kings back in, then put the hammer down and put the Kings away, then let up and allowed the Kings back within 10. Denver was clearly the best team over the last three quarters as well, they just didn't play hard all the time.