How often do you do this routine? Do you not feel your abs get enough stimulation from squatting/deadlifting/OH pressing/chin ups, etc? And during the couple of weeks you've been using this routine, have you also been dropping body fat? Do you think this is a coincidence?
Think about it: you say the routine is the hardest, most intense training you've ever done. So I PRESUME this means doing the routine will get your heart rate up and burn a lot of calories, right? So, essentially you've been doing a form high intensity cardio for the last couple of weeks, so how do you know you haven't just lost fat thus making your abs more visible? And if this is the case, how then is the Ab ripper X thing any different to any other type of fat loss regime? Because obviously you can't spot reduce fat around your abdomen, which I'm sure you know.