I wanted to create this website to inform people of the vast differences if they were not aware of them already. I did not get a lot done today, but the research I found seems to be sending me in the right direction. I'm thinking about creating a couple tabs to contrast three popular Disney/Grimm classics (Sleeping Beauty, The Little Mermaid, and Snow White) then leaving the rest up to you guys to research yourselves. But don't worry I'll leave links, and videos to make your life easier.
Spoiler Alert: In Cinderella, the step sister's eyes are pecked out by pigeons, and they live as blind beggars for the rest of their lives.