On the front page:
Why are those differently structured?
Question lists typically show the start of the question's texts and the asker's or last editor's avatar:
The front page however, possibly to fit more questions in a page, only shows the title and the asker's or last editor's username:
There simply isn't enough space on the front page for the vertical arrangement for votes / answers / views.
The reason is showing more questions in the front page, since that page doesn't use a pager, contrary to http://stackoverflow.com/questions.