Text size: Edit vs Fusion

I'm a newbie, please: what's the relation between text size in edit page (e.g. 70) and text size in fusion page (e.g. 0,0475)?
THX!
THX!
https://forum.blackmagicdesign.com/
https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=78839