Yup you're correct: named pressure rather than force (the specific function you linked was not in 1, but pressure was in the legacy methods since version 1. Search the page for pressure).

It is live on most devices, and reflects pressure quite accurately, and is doing it by measuring the touch area per contact on the screen, which with a human finger varies based upon the force of the press. Presumably on the Huawei they would just use the actual pressure sensor instead of the proxied size.