Teams catch up within a year. Remember the Dolphins and their "wing" formation which caught teams off guard.
RG3 is very hyped and marketed for good reason. Watch him play and see how often he almost takes some really big hits. Unless he changes his play/style soon, he won't last. He reminds me of Randall Cunningham. Alot of gimmicks but, when the defense catches on, it will be the real test.