The QoR watercolors granulates just like any other watercolor, depending on the size of the pigments (as a general rule). The smaller the pigments are ground, the less they granulate because of the penetration of paper. The Aquazol doesn't inhibit the pigments from clustering together (granulating). Look at any colorchart from QoR, and you'll see that the Ultramarine i.e. is very granulating, and makes the most beautiful, heavily granulated colors when mixed with other, less granulating ones.

I think the main difference you actually see with the QoR, are its ability to contain pigments. If you do a wash comparison, you'll see that the QoR needs to be diluted a lot more (!) than regular gum arabic - based watercolors to achieve the same wash out. This means you'll need a lot less paint.
I.E. Green Gold is a perfect color to do a wash with because of the yellow undertone that emerges when the color is diluted "enough".