User blog comment:JediSpectre117/Mass effect and Skyrim trailer connection/@comment-217683-20110716222655

Yeah, it's not "probably coincidence". It's definitely coincidence. Two unrelated game developers using similar (and extremely common) themes in their games? Stop the presses!

Seriously though, nothing here is shocking or unique to just these two games, nor is there anything at all noteworthy about the overlap here.