The thing about "Brawler" is this, it desperately wants to be an indie fight movie about two Irish brothers and MMA... But it fails. The actors aren't Irish, the chicks aren't that good looking and New Orleans doesn't make the same energetic backdrop that Boston or New York does in all the other movies that are ultimately just like it, but far superior in execution.
Out of the two lead actors you have nothing to like, one is a self righteous jerk that spends the first quarter of the film judging his unruly brother. Who by the way, is a skinny jean wearing pansy with a faux hawk. It's so hard to take any of what you're seeing seriously that by the time it does get to the fights you're drenched, marinated in the silliness of the experience and your jaded eyes can't help but see them for what they are, cinematic trash, just like the rest of the movie.
If you want to see a good fight movie about two brothers with "issues", check out Warrior, if you've already seen it, watch it again before you waste your time with this garbage. Just because something is "indie" doesn't mean it's great and defending it or acting like it's something it's not just makes you a fool with low standards.
These are of course just my opinions, if they smack to you as being overly critical then ignore them and torture yourself by sitting all the way through this pile of drek.