They're honestly both hilarious. And I think Melissa stole the show in Bridesmaids. But to me, no one will ever be funnier than Kristen Wiig...there's just something about her that always makes me laugh. Her movie choices have been a bit suspect as of late, but I appreciate her for doing something different and trying to grow as an actress. And Melissa's movies have generally been messy lately too.
I'm hoping Ghostbusters will bring them back to their peak form. But I'm afraid Leslie Jones is going to ruin it because she's horrifically unfunny.