To AvP Kicks Ass,
Rodriguez has said he wanted his film to have NOTHING to do with Aliens vs Predator, given the harsh receptions which the AvP films have garnered and he's said that he was ignoring Predator 2, AvP, and AvP-R.
He's actually gone as far not to use ADI, even though they are contractually attached to doing Alien, Predator and AvP films, he's dodged using Ian Whyte, and now Tyler..
Fans wanted Silvestri, but, I don't know.. we'll see.
One thing about Brian Tyler is that he does awesome scores. He's used themes from Alien, Aliens, Alien Resurrection and Predator in the AVP-R soundtrack and made the music quite epic. Even if the movie was less than well recieved.
He also did a good job on the Dragonball movie soundtrack.