it wouldn't have changed who "won" New York.
The post I replied to said:
Not 16 points worth of mistakes..........
Implying that it doesn't matter unless it made a 16 points difference and therefore would have flipped the "winner".
So what I'm saying is that a difference smaller than 16 points is still important because it likely would have changed the number of delegates each candidate got.
I do also agree with your point that a change less than 16% would also change momentum. So we're both pointing out reasons that it matters even if the effect was less than the amount required to flip the "winner".