Scenario 1: It is MS Obito vs MS Sasuke (Sasuke has achieved his Final Susanoo and can use it in this fight).
Scenario 2: MS Obito vs EMS Sasuke
Scenario 3: MS Obito vs EMS Sasuke, but this time they have full knowledge on each other.
Starting distance: 10 meters.
Location: Plain Battlefield
Intent: Win the fight. (I didn't put kill due to Obito's Kamui).