my take:
*****Cancellara
****Sagan, Boonen
***Terpstra, Stybar, GVA, Vanmarcke, Devolder
**Thomas, Paolini, Kristoff, Roelandts, Démare
* Chavanel, Vandenbergh, Gallopin, Pozzato, EBH, and everyone else
I would put Cancellara above the rest. He is still the only one who can arrive solo.
Sagan has to hang on, Boonen as well. Paterberg is not the best hill in the end for Boonen, so it will be hard to see if he cracks there.
Terpstra, Vandenbergh and even Stybar will have to work in the finale. They can win if the equipe outnumbers the final gruppo after the Paterberg.
Vanmarcke has to play it tactically.
Devolder should go from the Hotond with 26K to go.
GVA will burn all his matches by unnecessary countering some moves, even deep in the finale. He won't let the OPQS counter e.g. Cancellara, because he absolutely wants to show he was good after he finished 8th.
Paolini, Kristoff, Roelandts and Démare can survive (but not necessarily). Degenkolb is just a little too fat to survive the Paterberg (admit it).
Chavanel, Thomas, Gallopin, EBH and Pozzato are all good riders, but to be honest, they all lack something to beat Cancellara/Boonen/Sagan in this race.
I Would like my avatar to win Paris-Roubaix, preferably all-out from e.g. Mons-en-Pévèle.
