Robert Rodriguez's role in making Predators

Albert West
MemberYoung BloodNovember 12, 20124393 Views3 RepliesOn the cover of the Predators dvd it has written "Robert Rodriguez Presents"....
My question is this: How much did Rodriguez contribute to the film and how much did Nimrod Antal contribute to the film; after all, Antal was the film's director.....
Second question: Will Nimrod Antal be directing Predators 2?