But, in saying that, had what would have been Augustine Pulu's third try of the evening been allowed to stand by the match officials, the Reds would have faced a far harder road home.
The Blues halfback did extremely well to make his way to the line after being knocked over by two Reds defenders, but referee Brendon Pickerill, after first awarding the try, came to the conclusion with his television match official that Pulu was held in the tackle and didn't release the ball.
The multiple replays appeared inconclusive as to whether Pulu was held and tries can only be disallowed when the evidence is "clear and obvious".
In this case the Pulu, who was excellent overall, and the Blues were short-changed. A converted try would have increased their lead to 13 points.
"I suppose I have to pick my words carefully here," said MacDonald. "I just can't see why it wasn't a try but the referee found a way.
"It would have pushed the lead out. I think we were up by six points. It was under the posts and obviously a critical moment. We had the ref's ears on. We heard what they were discussing. It was his decision, I suppose. Obviously we don't agree with it but that's life isn't it.
"There's so much on for referees to get right and I don't think they're getting it right at the moment. There are too many games where people are talking about the influences of the referee. It shouldn't be the case in any sport where the referee has a big influence on the outcome.
"Maybe it's something that World Rugby need to look at in time."
For the Reds it was their first victory over a New Zealand team in 16 attempts, and their coach Brad Thorn wasn't convinced they could do it after a poor start.
"At the start of the game I thought 'this could get ugly'," he said.