The short answer is yes. The long answer is...long. I have not used the complete Deep Crystal system, but I have used other similar Meguiar's products, and I have only used the older GC wax, but I believe the newer GC is fairly similar to some other Meg's products.
I'm not sure if you work by hand or machine (I'm presuming by hand). The DC1 is a decent paint cleaner, but the DC2 product is difficult to work with and kind of unecessary for modern paints. I'm presuming the DC3 is pretty close to #26 liquid, which is a decent wax.
The Perfect Shine concept is to polish the paint, protect it with an acrylic product, and top it with a carnauba "beauty" wax. This really is a great concept, combining protection and appearance. The "topper" wax (in this case P21S) will need to be reapplied probably every 4 weeks or so. The only addition I would make to the Perfect Shine Kit would be some Klasse SG to build up a little more acrylic protection before the topper (As noted in the Perfect Shine method elsewhere on this and the ACC site).
Bottom line is that you will get fine results with either system. My opinion is the Perfect Shine method will give you a little better results, be perhaps a little easier to work with (other than the SG step

) and better longevity overall. Bear in mind that the Perfect Shine "Kit" is a little bit more specific than the Perfect Shine "concept" in the Guide to Detailing, and there are certainly many ways to go about it (buying more/less/different products), but I don't see how you can go wrong with the kit.