Can someone please explain....
...why the bs is different for 6D vs DD?
An example: bs for DD, H17, no DAS for 6D and DD (at least in my strategy charts) differ in three instances: 9 vs 2, A,3 vs 4, and 6,6 vs 2.
The proportion of the different types of cards remain the same regardless of the number of decks so why should the bs be different from a fresh shuffle? From a practical standpoint, it doesn't really matter much to me, but I really am curious.

