It really doesn't have to be as cut and dry as all that though Squiddy. The fact is that not all gay men are into prostate stimulation via prostate and not all straight who engage in this are gay BUT as a straight male I have no interest in seeking this out.
So when it comes to the question as to "whether I would find male to male anal sex pleasurable?", I doubt it, prostate gland notwithstanding. Would I venture here experimentally, to know for sure? Nope. I will die wondering maybe but you know I can live with that easily.