BTW, why did NBC decide to call the show Classic Concentration instead of just Concentration or The All New Concentration? Just wondering.
Just a guess, so take it for the nothing it's worth:
1) You don't want to just call it "Concentration" because folks not paying enough attention will think it's a rerun, as "The $25,000 Pyramid" found out a few years earlier.
2) "The New..." and "The All-New..." were already horribly overused in game show revival titles. "Classic" wasn't. Besides, alliteration is always good.
3) Calling the new version "Classic" implies that the new episodes will be reasonably faithful to the original, as opposed to, say, "The New Price is Right". You almost certainly are more familiar with the previous versions than I am, but from what little I've seen the only serious changes were replacing the mechanical game board with an electronic one five spaces smaller and finally getting a really good bonus game, so the title fits. All's relative, but at the very least it makes more sense than "Classic Card Sharks" would have on the most recent version.
or 4) someone was being creative