Michael,
Microsoft does not officially support using the Surface pens on anything except
Surface devices. And there is also no official support for other NTrig based
pens on Surface devices.
You mentioned "The HP pen and HP tilt pen are made by microsoft " - Microsoft
does not make these pens.
You might want to use the Feedback Hub App to file a suggestion for Windows Ink
to include pen pressure settings for devices that support this so that it gets
in front of the proper team.