Mmm, my last one was rejected too at CGTalk - I just checked, and the last image that even included an element from TG2 (the sky) was Olivier Vernay-Kim's by now well-known "Heading South", submitted on 13 June.
One can read too much into these things - it could just be one person who doesn't like TG2 images, and the submitters have been unlucky that he's been adjudicating each time. Or perhaps there is still the prejudice that TG2 is just "Open and render", with no skill involved. Anyway, it's a shame if there is such a bias - and it could prove commercially damaging to Planetside, which is even more of a shame.