Breaking Bad is great, but Hamm is a better actor than Cranston. And Hamm's lines are better written. Breaking Bad has awesome things happening, Mad Men has awesome character development. Former is sometimes heavy handed in dialogue (Jesse's rant in the hospital) while the latter is sometimes heavy handed in double meanings and such (the ghost scene in the last episode). Both are often great at making the viewer make connections not based on linearity / plot / etc; with mad men this is more pronounced and successful partially because the particularities of the historical and professional configurations. But Hamm/Don is better (see: drunk Don) than Cranston and Peggy (see: any time after the first season) is even better. And Roger is the best character.