This explains why I lean toward the .54 and .58 when using round balls for deer. Though I've never hunted deer with round balls in a .45, many folks do with good results.
I too agree that bigger is usually better. I wish the data would have been with the same MV.
Here some additional data to think about: Taylor's KnockOut value- KO value.
I added some low/high to your original data.