Makes perfect sense!
I get great pleasure rolling the largest single log I can into the front two doors of our Jotul Firelight. It's got to be really seasoned to burn well. Just about six hours ago I put in a single piece of black gum that just barely fit in. It takes full air to burn these large chunks at a fast enough rate to keep secondary combustion going strong. I think it's got something to do with the volume of wood in the firebox Vs. the surface area of the wood itself. Of course a large round would have less surface area than splits. By habit when cutting and splitting wood I mentally size up pieces that would fit in the stove. I often leave these whole and use them for over night burns.