I guess we should step back a second. If some ones goal is to just raise calves for the auction barn, there is no need for either. Pure Angus or Brahman are both way to expensive to get value back at the auction barn. Good crossebred cows and a good black bull is all a person needs.
On the other side, with pure bred it's 6 one way half a dozen the next. It will be regional and a marketing game.
We run Brahman cows as part of a bigger picture, to produce our own F1 replacements. We don't run Brahman cows to raise Brahman calves for sale. Most people in our area do the same, they raise F1s. You have a herd of Brahman cows and run Angus or Hereford on them the vast majority of the time. You only breed back to Brahman bulls when you need to restock your Brahman herd.
In that scenario, an F1 female brings real close to a commercial Brahman female, and the F1 steers may be .20 or less off, especially with black F1s.