I've been fiddling around with the site again, changing some stuff on the backend. I've worked out a few more odd little bugs that seemed to have arisen due to the integration of all the Platinum data. I'm pretty sure I got them all this time, though the compromise is a bit silly.
In the DP Walkthrough and World Map, you'll occasionally notice a Wild Pokemon appears twice. This is because sometimes a Pokemon appears more commonly in one version than the other, so this is represented by separating the difference in rarity into two spots; one will list rarity in BOTH games, while the other lists the additional chance to find it in only one. If you are playing the game with the additional chance, add these numbers together. I'll probably rework this soon, but it's a nice simple fix for now.