I read a review that said this wasn't a Luc Besson film and that he tends to tag his name to a lot of movies nowdays to give them some clout. What a dick. I mean this is no 'From the Producers of Alien' or 'From the Director of The Matrix second cousin'. Nope People, he wrote this hence the Besson attachment and the Besson influence.
Of course this tells you what to expect in terms of script and style, and so you know what's in the box is what's on the box. Yep. Groovy fights, tight editing, colourful characters and crazy stuntage. This time using the age old setting of a prison state. Nice work!