Sure not a great example, but fire two bowling balls at eachother and fire two feathers at eachother at equal speeds, how big do you expect the debris fields to

Sure not a great example, but fire two bowling balls at eachother and fire two feathers at eachother at equal speeds, how big do you expect the debris fields to be in either case? The bowling ball collision has a lot more energy involved, it can eject more debris at high velocities in various directions.