Naruto vs Sasuke at the hospital, Best and Worst outcomes

Naruto and Sasuke's fight on the hospital roof was interrupted just before the end by Kakashi.

And if we remove Kakashi from the scene (He's out on a mission or something) Sakura likely dies trying to stop the fight, she tried to before Kakashi arrived.

So let's say Kakashi is elsewhere and Sakura is frozen in place, what do you think the best and worst outcomes are for Naruto and Sasuke.