According to the Narutopedia Kakashi accomplished 42 S-rank missions... and Itachi only 1!
A don't know what kind of missions Kakashi got, but I can't believe those were on the same level as Itachi's mission was...
Itachi's S-rank mission:
- to become double agent and spying for both sides
- make a contact with ''Madara''
- massacre the whole Uchiha
- to become a member of the Akatsuki, spying on them and manipulate the organisation
- help his comrades from the shadows
- protect Konoha from any danger
- keep an eye on ''Madara''
- keep Konoha's secrets
And all this for 8 years!
So, where is the justice?
A don't know what kind of missions Kakashi got, but I can't believe those were on the same level as Itachi's mission was...
Itachi's S-rank mission:
- to become double agent and spying for both sides
- make a contact with ''Madara''
- massacre the whole Uchiha
- to become a member of the Akatsuki, spying on them and manipulate the organisation
- help his comrades from the shadows
- protect Konoha from any danger
- keep an eye on ''Madara''
- keep Konoha's secrets
And all this for 8 years!
So, where is the justice?