Fair comparison
Universal Document vs Google Docs
Google Docs is a collaborative hosted editor. UD is a portable document architecture intended to keep useful state and evidence when the document leaves a platform.
Not a forced replacement
UD is designed to coexist with established formats. The practical question is which object should carry structure, state and lineage, and which formats should remain compatibility exports or required delivery formats.
Evaluate with one real workflow
Compare how each approach handles revision, finality, portability, machine readability, provenance and recipient friction.