Actually, Fantagraphics' "normal" (two-volume) LO$ edition has almost no annotative texts; just an opening introduction from Don for each volume, adapted slightly from preexisting texts but mostly entirely new at the time.
For the "deluxe" (giant one-volume) edition, Don and I expanded those introductions further. So there's a couple of pages of material that really aren't quite equivalent to anything in the DRL. The "deluxe" edition's concluding texts (each one page) introducing the LO$ international cover gallery, and presenting Don's dedications to Byron Erickson and myself, are also new.
The annotative texts are all back in the "deluxe" edition, and 98% the same as in the DRL, though the illustrations are often different, with many newly chosen ones. And I say 98% because: the annotative text for "Of Ducks and Dimes and Destinies" is expanded somewhat in the "deluxe," adding some text by Don from US 297 that somehow hadn't made it into the DRL version.
(All of the annotative texts in the DRL are composites of different texts Don previously wrote/rewrote, expanded and/or edited for various earlier editions at Gladstone, Gemstone, Egmont, or elsewhere; the idea was to agglomerate as many different facts and observations as possible. But we'd missed a few that were uniquely in US 297.)