Actually, I've offered no particular opinion about Mark's "JC" persona (in this thread)
His ban last October was certainly appropriate. And when he told me at EOG that he would rather stay banned than ever post here again while I was a member and/or Wilheim was HeadMod, we simply complied with his request.
As for your latter quip, Mark had no particular warnings about President Obama that were any different than for ANY non-Republican candidate, so he's hardly prophetic.
Meanwhile, most of us who voted Obama remain very satisfied with our selection, especially when compared to the primary alternative presented last November.