These are based on John's letter grades. There were two posts titled "Notable Grade Changes" plus the post the other night that have been factored in. Here is the scale I used;

    Bat Pit
A   17  13
A-  12   9
b+   8   6
b    5   4
b-   3   3
c+   2   2
c    1   1

I just threw that together quickly, so if we want to have a little debate, we could probably improve it. One thing that isn't accounted for and probably won't be is the massive difference between the the absolute cream of the crop. For example, I'd say Price is worth 4-7 points more than Feliz or Bumgarner, but all are rated equal in this system. You've got a little of that with the A- hitters as well.

Mean is 59.7, Median is 56.5.