In the next release of WP-Stats, version 2.20. I will have some filters built into the Stats Page, Stats Options Page (in WP-Admin), Stats Widget and Stats Widget Options (in WP-Admin) so that other plugins can use the filters to display the stats on WP-Stats Page.
I will remove all my plugins stats from the core of WP-Stats so that I can use the filters to put in the stats into WP-Stats. I will have some examples when I finalized everything.
I have also removed all my plugins stats from WP-Stats Widget because as from now on, my individual plugin will get its own Widget. Like WP-EMail Widget, WP-PostRatings Widget etc.