Winter Diesel in some places has a mix of Kerosene in it.
It all comes from the same place. Less Kero could mean more Diesel.
The winter mix in the upper midwest where I hail from is 50-50 number one with number two. And even then you have to treat the stuff since the crap they have to make now has a very high gel point.
But, your right, and I think the same. They wont be refining to kerosene, so diesel AND gasoline might take a good dive in prices.