On the surface, maybe yes, but realize that Delta just doesn't really do any matches to Diamond. I've also matched to United 1K and Delta Plat within the past year.

The best match I received via CK, though, was getting Air Canada Super Elite (their 100k level) a couple of years ago (EP was only being matched to 75k at the time). I was then able to maintain AC SE last year with a combination of their U.S. Aeroplan credit card, crediting some UA J tickets to AC (to help meet the mileage requirement), and doing some TATL flying through Canadian airports -- it's really not that different connecting through YYZ or YUL instead of PHL or JFK.

Anyway, status matches seem to be more popular than ever at the moment, and it's interesting reading the anecdotes here, which suggest that plenty of FT CKs seem to be taking advantage of them.