As best I can tell, the four sizes of Domino's pizzas made using hand tossed skins are small (10"), medium (12"), large (14") and xtra-large (16"). So, your 450-gram dough ball weight as used to make a 14" pizza has a thickness factor of 0.1031. For your 13.5" pizza size, the corresponding thickness factor is 0.111. If we assume that Domino's makes a 12" pizza with a dough ball weighing 450 grams, which is not an unreasonable assumption from what I can tell from the Domino's nutrition information, the corresponding thickness factor would be 0.1403. That is about the value I played around with in the Papa John's clone thread. Extrapolating the 0.1403 thickness factor to the 14" size ("large"), would mean a dough ball weight of 21.6 ounces.
I hadn't noticed it before, but the flour that Domino's uses is quite unusual. The Domino's ingredients list for their hand tossed dough lists the flour ingredients as follows: Enriched Flour (Wheat Flour, Iron, Thiamine, Mononitrate, Niacin, Riboflavin, Folic Acid). That combination is for a flour that is enriched, as Domino's states, but unmalted. Under U.S. FDA labeling rules and regulations, if a flour is bleached, the label is supposed to say that. However, since an ingredients list is not a label, maybe Domino's isn't required to say whether the flour they are using is bleached or unbleached. However, as a good corporate citizen concerned with the nutritional interests of its customers, I would think that Domino's would state in its ingredients list that a flour is bleached if that is in fact the case, much as it indicates that its flour is enriched.
But what is highly unusual about the Domino's dough is that fact that the iron is in the Domino's ingredient list right after the Wheat Flour, not further down the list of enrichments as is almost always the case. I am unaware of any commercial flour that has the same composition as the Domino's flour. And you won't find that flour at the supermarket, at least not in the U.S. My guess is that Domino's uses a flour milled and blended to their specifications.