Gatts is an entirely diffrent story, his now-gone arm had more badassness than the combined badassness of the entire Naruto cast, and that's including the charecters who hadn't appeared yet, and even those who haven't been thought off yet!
Gatts is rivaled by none as a charecter, he generates more 'badassness vibes' in his sleep than what Hiko Seijru (a serious badass by himself) vibed off in the begining of the first OVA...
did you notice how many times i used one form or another of the word 'badass'? that was seriously badass!
Griffith was a true genious, he made a better friend, rival or a villian than anyone else could (using the word villian is a bit deragding for griffith, isn't it?) Next to him, Sasuke is nothing but a shallow form of a plot device... so what if 5 genins risked thier life for him? it's not like they trusted him and were sacrifised to his ambitions, they even had a chance to fight... can't say that on 'the band of the hawk", can you?