Seems to me that this may be a new DLS bug, as TS12 users and TRS2010 users are obviously getting different results here. As mentioned previously the asset is TC1 and 2 build so should be showing up for both searches- but obviously isn't.
Maybe it's worth raising a ticket with N3V, Terry Palmer usually gets to the bottom of DLS issues, maybe this is a new bug like the lack of e-mail responses for uploaded content that appeared recently, that seems to only affect some of us also.