Let me guess you think Murray just wants it more.
They both want it equally. Here are my reasons:
1. Murray's best surface is grass.
2. Murray has crowd behind him
3. Murray has improved since Ivan Lendl became his coach. His serve is now a major weapon on the grass.
4. Murray is probably playing the best tennis of his life.
5. Federer played great against Djokivich especially his serve, not a single double fault. With that said Murray is probably the best returner of serve in men's tennis.
6. Federer may bounce slightly after beating Joke.
7. I think match should be pick, so I also like the value on Murray at +175
Are these enough reasons for you?