My best guess is that The Plumber of Seville was not a modern restoration, The Loose Nut certainly looked nice enough, I'd buy that as restored, but it's a little tough to tell here in the Atlanta area, where Directv can't carry the national HD MeTV feed because there's a local MeTV station that they already carry in SD. The Loose Nut is also a toughie as the background palette is so full of browns and dark greens, there aren't many spots with colors that 'pop' to help judge.
I would have to guess that the elements from the old Woody Woodpecker show, the opening, the interstitial with Woody and the film projector, and the clip of Walter Lantz were not restored. No big surprise there, and it's cool that MeTV included stuff like that anyway.
Fun stuff, glad to see MeTV freshening up their animated lineup with stuff that hasn't aired in such a long time. If they had to part with the DFE library, this looks like a nice acquisition to fill the gap with. And airing stuff like Sh-h-h-h-h-h, who doesn't want more Tex Avery on their Saturday mornings?!