What is the exact efficiency ball park for a center vent vs a front vent?

[rajhlinux]

Are center vented pizza ovens provides a considerably more efficiency than to front vented oven?

If so anyone here has a specific "ball park" efficiency percentage?

Just want to know if it's really worth for a center vent than a front vent.

[Gulf]

I don't have a "pie R square" answer for your question. But, combustion gasses exiting the top of the dome is waisted heat. That means waisted fuel and longer heat ups.