well, sagan warned everybody, but mainly quicksteppers that he can decide who will win. In MSR, he decided it will be Kwiat, today, he decided it will be gva.
Now kidding aside, Sagan imho wouldn't have won against GvA today. As he seems never to do in these kind of finales. What he did today, was probably for Lefevre to realize, that GvA can't be let go. Sagan will probably drop everybody on Kwaaremont Paterberg duo, but he need's to get there in a way, when he can finish it alone, or without GvA, unless they have 1 min gap on Paterberg on the chasers, and even then I would favor GvA.
We'll see, but it should be a great spectacle on Sunday. I am glad GvA returned to the game as cycling fan, as Sagan's a little bet less. Let the best of those two win. If they splitted ToF and PR with PR to Sagan, I wouldn't care.