I honestly cannot say one way or the other whether or not Bale dives to cheat, since with refs giving him no protection from potential leg-breaking tackles by thugs like Adam, I can understand why he might want to exaggerate the knocks and trips he gets.
For Suarez, and especially Gerrard, however, there are absolutely no excuses. I've actually seen Gerrard "throw" his trailing leg out behind him in a desperate attempt to make the "foul" look as bad as possible. In one instance, you can clearly see from the video footage that the opposing player never touched him. Gerrard is an utter disgrace, and I cannot believe that you would want to defend him, Gaffe.