Sizing might also turn out to be slightly subjective..
Yes, exactly, width-wise they are larger! But not length-wise, and that's where the flaw in shoe sizing lies. Because it only really takes consideration of the length of the shoe, and that does not make any sense, since humans have so different and individual shaped feet, even excluding width and overall volume.
If you perform Nike's measuring method and then check out their sizing chart, yes, you will find that the Vaporfly's are larger than the chart says that they will be! Which are International Standard. So in that manner they run large! But they shoe itself is not long, internally, compared to any other Nike shoe.
And that is one reason why I'm so overly happy with this model, because it is a correct step in being more true to standard sizing, and more true to my body shape.
What Airmax's though?
AirMax 2017