Odd that it took them this long to specifically target Delta; although I don't see how this one differentiates much from the match that is open to all. The only difference I see is you don't have to pay for the status upfront like the normal match; so maybe they consider that a big incentive.
Had they offered a match with reduced requirements to attract Delta elites, this might have been a slam dunk. Interesting that they only want the top elites.