They use Corrosion Free (as opposed to Krown). I don't think it really makes a difference.
The Department of National Defence tested some rustproofing products. We tested a few products in our DND labs that included Krown back in the mid 90s and another branch of DND (DRDC) tested products in 2006 that included Corrosion Free. You can Google and find those test reports.
There was a magazine article I once came across discussing Corrosion Free where this shop owner in Mississauga claims that Corrosion Free is the choice of the Canadian Military. Well maybe some DND field units, but not as far as I know, based on our testing, they chose to use Krown.
I also think the quality of the application is most important.
I've been using Krown since 1990 and have been applying it myself since 1999 to make sure it was done right. Although, the product creeps so well, even if they miss a spot, it'll get coated in a short time. I never had holes drilled. Both the 1990 Toyota and 1999 Honda were sold rust-free at 16 and 15 years respectively.