Sadly, I watched that horrible movie and none of these guys had large parts that would have required more than a day or two of filming. I think GSP only lasted 2 mins in the movie before he was killed by the main character (unless there is another shitty movie with GSP as an underground cage fighter).
I think Silva's movie is the type where he's actually on screen for the majority of it and that could take upwards of a month. Rampage's acting might not seem that bad after we see the straight to DVD reviews of Silva's film.
The Jets have won more Superbowls than you have.