I'm a bean counter by nature, so I went through the draw and assigned the top 32 (minus the top 4) to one of four categories:
1) Little chance on the grass (including clay courters)
2) Post Injury so probably should be in No 1 (Nalby and Gonzo).
3) Danger Man. These are the players (like DelPotro) who are seeded out of the top four but could pose trouble to the top four.
I then checked to see whose quarter they were in.
Here are the stats.
1) Little Chance:
Rafa had 3 in his quarter ad did Djokovic and Murray. Federer had 7.
2)Players coming off injuries: Both in Federer's quarter.
3) Danger men: Rafa 3, Djokovic 4. Federer 0, Murray 4
This is an unscientific analysis as different fans might assign different players as "Danger men". I used Soderling, Berdych, Roddick, Monfils, Melzer, Wawrinka, Gasquet, Mayer, DelPotro, Raonic and Baghdatis (based on that one AO final and that one match against Agassi at the US Open).
Different fans might also have a different opinion as to who has "little chance". I used clay court specialists like Ferrer, Almagro ad Belluci along with those who don't live up to expectations like Tsonga, Troicki, Verdasco, Dolgopolov and Cilic. Tsonga could easily be put into the Danger Man category which would give Federer 1 danger man in his quarter.
It would be interesting to see how the rest of you analyze the draw.