I think the big difference is that SNL mocks what is seen on the air. Kathy's act as I recall talked about things she saw behind the scenes and I think related to the whole Rosie vs Elisabeth tension. Also, it was Kathy who said she was banned. I don't think the view ever confirmed it. So they may have just not booked her, and Kathy made a mountain out of a molehill in order to promote herself.