"It was even discussed that I would be firing The Donald on the first show." That's how it sounds to be Martha Stewart explaining why your TV show just ... didn't ... succeed.
Here's how it sounds to be The Donald: "I think there was confusion between Martha's `Apprentice' and mine, and mine continues to do well and ... the other has struggled very severely. I think it probably hurt mine and I sort of predicted that it would."
So what's your theory about why Martha's show was never nearly as good as Donald's? Mine is that she always cared too much about her image (and the image of her company, Omnimedia). If you're going to be a bitch, be a bitch. You can't be a please-like-me female at the same time. That's icky. Trump lets himself be a truly weird buffoon (even as he makes a lot of sense a lot of the time). Stewart can't bear to play into her own bizarreness.
Second theory: Trump has Carolyn Kepcher. Everyone loves Carolyn. And Martha had that guy that wasn't quite George. She needed better sidekicks!
Third theory: Trump's show has fabulously dramatic photography, editing, and music. It's just mesmerizing! By comparison, Martha's show felt flat and bland. Did they just not give her as much money, or were the aesthetic choices like her interior decorating choices? Beige, beige, beige.