From looking at the ad trailer, it looks like an old footage compilation to me as well. The only live/new performance seems to be from Jordin Sparks. I don't think this near-unknown GMC channel can afford to bring in so many big name stars: U2, Sting, Bon Jovi, etc. Likely the program only paid for rights to show old 'greatest hits' clips of these big names. I'm just curious about what Christmas tune is Bono-only and not U2?
Nonetheless, thanks for sharing this news!
related question: why is it that U2 only make appearances on late-night talk shows? (Letterman, Conan before he got shelved to TBS, etc)? Are they 'too big' for daytime shows, or is it a different kind of audience?