Crust & Coal
Head-to-head: the two ovens you are actually choosing between
Nobody shops a whole category. By the time you are ready to buy, the list is two ovens long. These pages are that list, resolved.

This hub exists because of how people actually buy an oven. Nobody sits down to evaluate the category. They read one roundup, form a shortlist of two, and then spend a week trying to resolve a question that no roundup answers: not "which is best" but "which of these two, for me." Those are different questions and they need different pages.
How we resolve a matchup
Every comparison here follows the same structure, deliberately. First, the published specifications side by side, in one table, with blank cells where a maker does not publish a figure — because a missing number is itself information, and pretending otherwise is how comparison sites end up inventing data.
Then the differences that are real. Most head-to-heads in this category are between two ovens that both reach 950 F, both cook a pizza in about a minute, and differ in three or four specifics that matter enormously to some buyers and not at all to others. Stone thickness, chamber height, weight, and whether the burner sits at the back or along the side: those are usually the whole argument.
Then a verdict that names a buyer rather than a winner. "The Arc XL is better" is not useful. "The Arc XL if you cook four pizzas in a row, the Koda 16 if you carry the oven in and out" is, because it maps onto something you already know about yourself.
What we cannot tell you
We have not cooked on these ovens. Every one of these pages is a comparison of published specifications and design decisions, not of results, and where a difference would only show up in use we say that rather than inventing an impression of it. That constraint is more limiting than most sites admit to, and it also rules out the specific failure mode this category is full of — the roundup that has clearly handled none of the twelve ovens it ranks and says so nowhere.
What published specifications do settle, they settle completely. Whether an oven fits a balcony is a dimensions question. Whether it takes a 16 inch pizza is a chamber question. Whether it will still be at temperature for the fourth pizza is largely a stone-thickness and insulation question. Those are most of what people are actually asking.
The comparison that comes up most
Gas versus multi-fuel, at the same size and roughly the same price. It comes up more than any model-versus-model question, and the answer is almost always the same: buy the fuel you will actually use on a weeknight, and treat the other one as a bonus. Owners consistently over-estimate how often they will light a fire. The wood-fired hub makes that argument properly, and it makes it in the direction of buying less oven, not more.
After that: 12 inch versus 14 inch, which is not really a size question but a turning-clearance question, and it is covered in why one side of your pizza burns.
Everything in this section
Head-to-head comparisons

Head-to-head
Gozney Arc vs Gozney Arc XL
Identical stone, insulation and chamber height — separated by two inches of pizza and eleven pounds.

Head-to-head
Gozney Roccbox vs Ooni Karu 2
Two 12 in multi-fuel ovens approaching the same problem from opposite ends — gas-first with a peel, or wood-first with a door.

Head-to-head
Ooni Karu 2 Pro vs Ooni Koda 16
Same 16 in pizza and same 950 F — one with a dial, one with a fire. What the fuel choice actually costs.

Head-to-head
Ooni Koda 16 vs Gozney Arc XL
The two default 16 in gas ovens: 0.6 vs 0.8 in stone, 40.1 vs 58.5 lb, and one natural-gas option.

Head-to-head
Ooni Koda 16 vs Ooni Koda 2 Max
40 lb and 16 in against 95 lb and two independent zones — two different appliances rather than two sizes.

Head-to-head
Ooni Koda 2 Pro vs Koda 2 Max
Same dual burners and same 0.8 in stone — separated by 29 lb, four inches and two inches of pizza.

Head-to-head
Ooni Volt 2 vs Breville Pizzaiolo
850 F and adaptive control against 750 F and element-level control — two ovens for two different pizzas.

Head-to-head
Solo Stove Pi Prime vs Ooni Koda 2
Two inches of turning clearance against the only published BTU rating in the category.