Warrior is a good movie, maybe even a great movie. What works for this film are the stellar performances of the two brothers who take the lead roles. At no point in the movie are we led to support one over the other, which really works on the whole, and Nick Nolte steals the show with his performance as the troubled father. Tom Hardy is also fantastic here.
Where the movie falls, unfortunately, is the somewhat anticlimactic feeling which the film generates.
You see, while the movie studio are clearly wanting to make the most of DVD sales they have unintentionally hurt this movie by putting things like "All the Rocky movies rolled into one!!!!" on the front of the cover. Given that most folks interested in this movie will also love the Rocky saga, it sets up for inevitable disappoinment....
Much like any shark move will draw "better than Jaws" hype from those caught up in the pre-release crazyness, any fight flick will inevitably draw "best since Rocky" or "better than Rocky" and in turn both phrases alienate the exact people which they are trying to sell the movie to.
Warrior is simply not 'all the Rocky movies rolled into one'. I can see where people drew comparisons given the fighters' personal/financial situations (particularly to Rocky 1 and the final chapter) but that is where the simiarity ends. It's a great fighting movie, the best in a very, very long time indeed and will be incredibly enjoyable if you go into it without comparing it to something you probably by now love.