The last try should not have been given but it's the fault of the rule, and the game was won by then in any case. The penalty that gave Brisbane the lead was a fair pinch, the Warriors were all clearly a metre in front of the try line, and that is offside. AND the Warriors were wrestling in the play the ball. They could have been penalised for either infringement, right in front of their sticks. Not so smart, I'd suggest. Just because the scores are level with time running out does not mean you can break the rules of the game.
The Warriors made the most chances, and ran through the Broncos like a dose of salts in the second half, but continually lost the ball in scoring positions and played pot plant footy when it really mattered.
Sometimes, its not who gets the most chances, but who takes the chances they get.