They have a lower ceiling, let's put it that way.
One of many.
100% agreement, btw. In Napoli, the reason the pizza crust is soft is for similar reasons: so you can grab it hot out a window, fold it into quarters, and eat it with one hand on the go.
In general, I'd take a bowl of pho for lunch over either anyday if given the choice, and pho is pretty much meat, broth, and noodle peasant food. But at least it has some aspirations.