Sasuke, even with the EMS, would not have won, even with the info that Naruto had.
1. Sasuke had trouble with just The raikage, and "Pain" was basically 6 Kage level ninjas that unless you kill the correct one, kept comming back, so i doubt he could.
2. Sasuke doesnt have the Shadow clone jutsu, so he would have a harder time taking on 6 people at one time, also, he couldnt have used the tactic Naruto used to take out the Path that could revive the others.
3. Sasuke isnt particularly fast or strong, meaning he would literally get manhandled by the paths.
4. Sasuke isnt god, as so many people on this website say he is, so i doubt he would win.
P.S. Sasuke didn't even have E.M.S at the time, he got it AFTER the war started, so yeah, there's that...