Well they sure are different, but for me at least the 4p+k BT4K 6P 4p . k is just not worth it the timing is too difficult unlike with other setups like her 64T or after H+K launche, and BT4k is lower damage than BT4P if you want to try 4P+K BT4k/4p pp4pp7k the BT4p version does more damage...