I have used the DACP - and I prefer the look of SG.
Its glossier and deeper - I love it.
Its also significantly longer lasting than a wax.
On a dark car - a wax will last between may 3-4 weeks in summer to 6-8 weeks in colder times, until it has evaporated off.
SG will last longer than that - a good few months, maybe as long as four months.
It may offer some small protection against swirling. If you build up a few layers, the swirls will largely be in the SG itself, not the clearcoat.
Its main protection is against UV, rain, road grime, bird crap etc.