User blog comment:Calvincambridge30/Versus/@comment-79.115.71.25-20151223113147/@comment-1975828-20160827154734

I actually believe Godstiel was being overly self-confident in the face of the Horseman. Every time I watched that scene I kept thinking Death would have no problem swatting the fly, as they put it. I mean, Godstiel really was overly self-confident, even in his sense of righteousness. I bet Castiel would do anything even now to undo everything he did as Godstiel.

So, I don't think it's safe to say Michael and Lucifer, combined or separate, wouldn't be a problem for Godstiel.