CM Punk isn't on RAW because there's no room for him. On RAW, there are 6 main eventers (Sheamus, Cena, Jericho, Orton, Edge and The Nexus/Wade Barrett), while on Smackdown there's only Undertaker and Kane, really. (Mysterio's out, Show's feuding with Punk, and they're definately not the ME, and...