Care to elaborate?
Bread and pizza are not the same thing to me
. I don't think I know how to elaborate, because this may be a personal interpretation that just can't make sense to anyone else in the same way it makes sense to me. I'll try, though.
Here's the biggest way pizza and bread are similar: The four most important (or most common) ingredients of both pizza dough and bread dough are flour, water, leavening, and salt (with a few other possible ingredients in many circumstances, beginning with fat and/or sugar). After mixing these ingredients, though, they're different in so many ways that I can't even begin to make an adequate list. Mix time, hydration levels, and dough management come to mind right away. (And the dough management part is huge, because most pizza dough management is nothing like bread dough management.)
I don't know much about bread because I am not a baker. But when I eat pizza, I don't want pizza toppings on top of bread. And when I buy what I consider great pizza, it does not consist of pizza toppings on top of bread. Bread with pizza toppings is not the same thing as pizza. Bread with pizza toppings is something you eat in a school cafeteria or buy in the frozen food section of grocery stores (cheaply), then reheat (in a microwave). It might be labeled "pizza," but I think most of us would agree that it's pretty much not.
Some pizzas are bread with pizza toppings. Like Pizza Hut pan pizza. But I don't think Pizza Hut pan bread would sell very well without the toppings on it. Do you?
How's that for a start? This is all just some jerk's opinion, but I think it makes sense.