In Java Edition, the Wither Skeleton Skull drop chance is increased by 1% per level of Looting, for a maximum of 5.5% with Looting III. In Bedrock Edition, the chance is increased by 2% per level of Looting, for a maximum of 8.5% with Looting III.
This datapack changes JE drop chances to a BE drop chances. This makes Wither Skeleton Skull drops noticeably more common and manual farming less frustrating.