Actually with the leaf village being the strongest it works in 2 diffent ways
for some reason the majority of the villains say that the leaf village is pathetic(sound four for example) but that makes no sense since the best shinobi have come from the leaf along with the best Clans
Uchiha, hyuuga, Sarutobi, Senju, and many more clans. But Itachi, Sasuke, orochimaru, Jiraiya, Tsunade, Kakashi, Naruto, and Minato have all come from the leaf village
They may have the best shinobi but they are not the strongest in war. It sucks to think about but Danzo is right. Because of the 1st and 3rds teachings the village is to forgiving and easygoing about its missing nin(sasuke) come on these are ninja
The other villages are cruel(mist) or wont have a problem going against allies to get what they need(sand). The Stone and Lighting village we heard much about it but they were at wat with the leaf as well so its not like they were weak.
But that is completly off topic im sorry. Now Naruto convinsing the Raikage to let sasuke off the hook. My bet is that he is going to use Jiraiyas little speech about how the world needs to understand and forgive each other, and than Raikage is going to punch him in the face tell him kirabi is his brother and shut naruto up. Then sasuke will come along. But as for sasuke killing danzo well i doubt he could. As we can assume since danzo is hokage he his supposed to be the strongest in the village (besides naruto, and maybe kakashi). So its not like Sasuke will just take him out it wont work like that and with 4 other kages Sasuke wont stand a chance.