Sasuke would have died. Naruto won only because he went into the kyuubi mode after Hinata got almost killed.
Pain > SM NarutoMS = Sage Mode, killer bee was also stronger than Naruto at the time so it was a more intense battle on Sasuke's side than Naruto's.
No, sage mode is much better than just ms. Sasuke would have spammed his ms techniques so much that he would have gone blind during the battle. The paths would defeat Sasuke. Sasuke lacks kyubi.MS = Sage Mode, killer bee was also stronger than Naruto at the time so it was a more intense battle on Sasuke's side than Naruto's.
preach the wordNo, sage mode is much better than just ms. Sasuke would have spammed his ms techniques so much that he would have gone blind during the battle. The paths would defeat Sasuke. Sasuke lacks kyubi.