Bud claims to be a lager. Miller claims to be a pilsner. The problem with these American macrobrews is that they primarily use rice for their malt.
Yes. Rice.
the fact is, AB used to be a very good beer. They made a very real, very traditional lager that very much was recognized worldwide. America made a lot of great beers, in fact--prior to prohibition, there were something like twice the breweries we have today (thought he recent explosion has probably come to match those numbers by now).
One of the ways AB survived prohibition was using their patented refrigerated rail cars for other purposes. After prohibition, pretty much only AB survived with a few exceptions. But then, during the depression, the cost of grains became prohibitively expensive. AB altered the recipe to cut that down with Rice, created some marketing hogwash to convince everyone that it was now "fresh, crisp, great tasting, less filling" whatever, and after decades of repeating this mallarcky, it became the assumed standard. Whatever it was, it ceased to be beer.