Are not "real ales" unpasteurized, and therefore somewhat cloudy as opposed to the clear ales the big breweries put out because people don't want to drink cloudy beer? Any unpasteurized real ales I've tasted have been delicious.

Not true - I only normally go to pubs that serve real ale. If the person in charge of the beer is doing their job then there should be no cloudiness whatsoever. This takes a certain modicum of skill.

If the beer arrives in sealed metal dustbins, this does not take any amount of skill.