wtf is the difference?

My brother has the Mazda 6 sedan.
The only difference i think there is that, the trunk looks slightly different.

For example the Mazda 3 Sedan(4 door) and Hatch(5 door). You can tell a difference.
5 door:
the back window opens with the trunk.

Here is the Sedan

I don't believe there is any difference in performance wise.


But I still love my Mazda 3 more.

So basically, its a hatchback, and the other has a standard trunk.