Not sure what's going on here, but the numbers don't add up:
If you can see the image, the badge progress shows me at 67 of 80, but the impact summary shows 337.
It's possible at lot of those edits are to my own posts (not sure if own-post edits qualify). It's also possible a lot of those edits are from before Stunk & White existed. Another option is that this is a problem with the new user page, rather than the badge, but I'm not in a position to see that.
If this is that first option, and edits to my own posts don't count, this is still a confusing situation, and a change to the text on that badge summary might be appropriate.