To achieve that speed of pizza turnout would be quite the feat I think. Is this factoring in assembling pizzas? Checking/rotating pizzas partway through baking? The oven would have to be running much hotter than for the bread (admittedly no idea of the costs here). You'd probably have to use 5 separate decks to avoid slowing the bake when loading/unloading, 5 decks that could be packed with loaves rather than a single pizza.
Meanwhile, I don't see why it should take more than 10 minutes to load an oven with 3 dozen loaves. During the bake time, the baker can be mixing or shaping another batch or any other task. The pizza maker realistically can't be doing anything but assembling/baking pizzas.
Separate from baking, pizza necessitates the added labour of grating cheese and making sauce, or paying a premium for prepared versions.
No argument that 36 loaves is a harder sell than 5 pizzas. That's sales volume though, not margin.
Items per unit baker time doesn't really matter. 5 pizzas takes say 15-20 minutes of baker+oven time and gives you (using your numbers from up thread) $76 revenue (net ingredient costs). 3 dozen loaves takes a similar amount of baker time, 3x as much oven time (and probably at least double the required oven volume), gives you similar revenue, and is much harder to sell.