I'm not exactly sure...
What Joe is smoking? In my experience, those phosphate laden Cascade Action Pacs, leave dishes significantly more shiny, and gleaming than the Phosphate Free Complete Pacs.
The Complete Pacs, leave lots of Water Spots (if rinse aid isn't added) and... I can tell dried on Food doesn't come off as well, as it used to with the Complete Powder & Just the regular Action Pacs. I can say they work (if you do add the expensive, chemical laden rinse aid, but... you really shouldn't have to, tbh)
Although, it really doesn't matter. Europe's Problem, is the water there is like 4x harder than it is, in the united states. Here most people don't ever even get near 7-8 GPG, but there, its quite the norm for 20-30 to be considered "average" while, 30-50 grains, can even be observed in some harder water areas. Even with Water Softeners, built in to dishwashers themselves, I still don't see the detergent working out so well. Phosphates are the only ingredient that can grab onto water minerals, and suspend them, so residues dont redeposit, if you take those away, and replace them with carbonate & polymers chemicals, I just see a recipe for disaster, esp in extremely hard water areas.
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I want to make the point, of making this really, really clear. Detergents, have always been, and always will be better with Phosphates. Phosphates are a Builder, and there the best at what they do, and always will be. They grab onto water minerals, they trap & suspend dirt & grease, and they work with Enzymes to increase alkalinity.
Consumer Reports, has repeatedly said over & over, that NONE of the phosphate free detergents, have the same power as those that did before. Although, some *do* come close, though, such as the Finish Quantum & Cascade Complete.
One thing I that I think, we'll very much be noticed, is Phosphates get the job done, in much less time. With Phosphate Detergents, I can run our Dishwasher on "Normal" and everything will come off, and be really clean. When I use Phosphate Free, that just doesn't happen, I end up find myself, using a longer cycle such as Pots & Pans, or Smart Wash, because the Enzymes no longer have the ability to do there thing on a shorter wash.
I'm sure, a lot will notice the difference. I sure did...