Braviary has it rough. His stats and movepool certainly aren't terrible, and he is by himself perfectly useable. Great attack, decent bulk, high-powered moves that afford solid coverage (even though Superpower is less than ideal). He's certainly not a "bad" Pokemon, but Staraptor is simply better on the competitive scene.
I have used Scarf Braviary extensively in standard OU play on the servers, and he has never let me down as a revenge killer and late game cleaner. He has plenty of power, can take a hit, and dishes out lots of damage. However, I realize that no matter how effective he was in battle, Staraptor probably could've done the job even better. Were it not for Raptor, Braviary would see plenty of usage, because he is undeniably an all-around solid Pokemon. Unfortunately, Staraptor has the neat little tools like Reckless/Intimidate, CC over Superpower, higher speed, and what have you.
I hate to admit it, because Braviary is one of my favorite Pokemon, but unless he gets some moves or another way to distinguish himself down the line, Staraptor just does his job better. That's all it comes down to. He certainly does it well, but Staraptor does it better. At least he isn't as bad off as all the rest of the birds.
