Combo is fairly far down the list in ranked battle. Focus on chakra utilization, survivability, debuffs, and buffs. PB Sasuke is very good for buffs and debuffs, so he's a good ninja to use in Ranked Battle. Try to fit him with a ninja that has a relevant mystery round 1 and a ninja that has a relevant mystery round 3, and try to make sure he won't be killed or interrupted before he uses his mystery.