They also avoid mentioning BDSP entirely and this is just merchandise being made by an acessory company that probably had the license and is just releasing something to be roughly in step with a sinnoh release.
if they had specifically, blatantly had this BDSP branded and specifically called for it to be tied to those games that would be one thing. But it isn't.
Look I'm just going to put my cards on the table here: all they have to do, literally the only thing, is show one (1) of these things:
-an enemy trainer using a Platinum pokemon
-an enemy trainer using some other, non-Platinum, but different Pokemon
-an enemy trainer having literally any difference at all from their DP set, in general
-A wild encounter that is not from the DP encounter tables AND ALSO is not underground
If they do this, then I am willing to entertain that the Luxray & Abomasnow are misdirection.
until that happens though, I am going to assume based on what we've seen: That the above ground encounter tables & trainer battles use their DP counterparts.