My experience, for what it's worth, is that Angus (or any other pb British cows), no matter how good they are, just won't consistently throw as much power out of the same bulls as cows that have some clubby type breeding in their own background. It just takes more than one generation to get the kind of bone and sheer mass (and hair) that it takes to win these days. If you breed 10 good pb Angus cows to a good clubby bull, you'll get the pattern you're looking for, maybe the size you're looking for, but only one or two steers with enough power to show - and they may never quite make it to the top because they're still not as big boned and stout and hairy as the double bred clubbies. Granted, if you breed 10 good clubby cows to the same clubby bull you might get a couple that aren't sound enough to show, but your odds are better of raising a really good one and the chances of raising more calves that will sell for show prospects are much greater. The females and the sale barn calves out of the Angus cows will almost certainly be worth more.
I do think you can get that "clubby type" cow with an F1 Maine Angus, Simmi Angus or Charolais Angus cross, if they're the right type. It's just easier (and prob'ly cheaper) these days to find clubby bred females.
Edit to add - DSCSD, when you try to put the widest, deepest calf you can in a moderate framed 1350# package, some dimension has to be sacrificed, so length has been it. Thankfully most, but sure not all, major show judges have backed away from using the thickest and deepest (thus smallest framed) ones just because, so maybe someday they'll start caring about length again.