In terms of document display and screen real estate it's like most 12" notebooks and many 13" notebooks since it has a standard 1280 x 800 pixel resolution display common to both.
You can see a full page at a time at 100% with many documents, but it does depend on what page size layout the document was created with. For a standard 8.5 x 11 PDF, yes 100% works unless the margins are out to the very edge (which would be unusual).
As for ease of editing, that depends on what app you're using to edit PDFs.
-------------------- Lisa Gade Editor in Chief, MobileTechReview