The Matrix Revolutions has to be about ten times better than Reloaded, and equal to or a bit better than the original. I have no idea how anyone could think this was the worst movie in the trilogy! It has a hell of a lot more story than the second one, and has an incredibly epic feel, especially during the war at Zion.
One of the things lacking in the second one was a lack of emotion and humanity, especially in the fight scenes. Revolutions has brought this all back and draws you in deeply, so you feel like your fighting the war for Zion, and you really want the humans to win.
The violence is less than in Reloaded, but more than MAtrix. They've added a fair amount of blood (spurting from the bodies, graphic wounds on people), but the Wachowski brothers also took out the pointless sex. Language is the same as always: the "s" word mostly, with some "bastards" and "asses" thrown in their during the war.
If your kid saw the second one, than this is probably alright. But otherwise, I know I am mature for my age, this might not be alright for all teens. But hey, if they can see "R" movies, than this is perfectly fine. It actually isn't that bad comapred to other movies, such as Saving Private Ryan.
Mature Teens and Up.
PS: SEE IT!!!!!! AWESOME!!!!! REALLY GOOD!!!! RUNNING OUT OF WORDS TO USE!!!!