The problem with Mike is that he got way too cultish about HD being the best way to train.
It started like a 3-way split, where each body part actually got hit 2x in a week. For instance, chest directly with Flys&Bench on chest day, and then indirectly with Dips on arms day. He also talked about 1 set being the most logical place to start, not nessecarily being enough.
But soon, it evolved to 1 set every blue moon, with people actively trying to kill themselves in that one set and than not train again for 2-3 weeks.
DC took what's good from HD and that's rest pausing, progressive overload and hard work. But, there's also periodization (cruising), exercise rotation and extreme stretching. All of these things are, of course, also customed to an individual.
For instance, some people rest-pause by stopping 1 rep short of failure in each mini-set, but others rest only when they've reached failure. Some cruise by doing submax work, like a few easier sets, while others do a straight set to failure but without additional RP. Some for just a week, some cruise for 2-3 weeks.
And, as far as I remember, in his writing he talked about DC being an advanced program, for people who alredy had plenty of expirience with programs like 5x5 or even Westside.
So, what I'm trying to say is that DC is more than another HIT program. Definetly something I will try in future. I will not, however, squat in a Smith machine