I would say Frankie Boyle is more offensive. Like this one of his, about Michael Jackson & what he'd do to kids:
"I'm gonna dress up as a surgeon, I'm gonna do operations on em. Put little cocks & little clitoris's into the palm of their hands, so when I'm holding hands with the, I'm actually abusing the little motherf**kers." Frankie Boyle
And his disabled jokes are more nasty than CB.
Amazing he always has disabled fans at his tours and they laugh through out, also he suuporta disabled people against ATOS.
Frankie boyle is a character alot of people forget that.