what happens if titile and content are same? All in One SEO Pack Troubleshooting Forum

Like lets say my original post's title is "this is testing" and content is "hi this is this is testing" and on the very bottom you know how there is like a custom field where i put another title and content and keyword? What happens if i put same title " this is testing" and content "hi this is this is testing" ??

I don't really understand the all in one seo custom field that is in very bottom when writing an article.. Can someone help me?