Gas still wins with a short refuel time.
My own initial experiences have been mixed. Overall advantage still goes to gas. But I think we're very close to getting this battery thing figured out. Just a few years away. When we look back it will seem like it happened overnight.
By that logic, you could say that there is absolutely no difference, because if you can imagine a car where the battery can be swapped, you should be able to imagine a car where the entire fuel tank is swapped. A tractor arrives at a station, and instead of filling up 500 litres of diesel, the entire tank is simply replaced with a full one. It wins again since fuel tanks are cheap - they are just metal and plastic after all, you can have several just sitting there, full or empty.
The fact that no one has done it yet suggests that this really isn't an issue - commercial diesel filling stations usually run at much higher pressure than your regular pumps, a truck/tractor tank fills in minutes because of a much higher flow rate.
Swapping gas tanks provides no advantage and you conveniently ignore the whole point of the batteries which is that you don't need any fuel infrastructure to fill your tanks!
A fuel infrastructure costs magnitudes less than just one battery pack. You just need a large tank and pump.
Farmers have machines and equipment for almost everything. Swapping out a flat pack? POC
Swapping batteries implies either having multiple batteries, which adds to you costs significantly, or it implies adding yet another proprietary service company putting the screws to you in your supply chain.
For instance, don't forget the fuel suppliers, tank inspectors, etc, in the supply chain on the other side.
I was just commenting on the point of refuel time.
Also, it's possible to use extended swapable batteries for such cases.