This is a tough call but I have to say K11 high difficulty.
Ino-Shika-Cho can take out Jirobo rather easily.
Neji can beat Kidomaru as he did Cannonically in part 1 alone + help from others. The argument could be made that the others get in the way because they can't defend from the webs. So i'm going to assume they let Neji handle Kidomaru alone. In that case Neji wins but unable to continue.
Shikamaru lost to Tayuya because he didn't have firepower (Shino, Choji, and Kiba are great assets here). He pushed Tayuya to CM2 because of intelligence though. Shikamaru can use his Shadow to break his, and his squadmates fingers like he broke his finger in his fight with Tayuya. Sakura also has great chakra control and likely should be able to break genjutsu here as well w/o assistance.
I see Sakon/Ukon posing a threat because if they body fuse with K11 (particularly Ino, Hinata, Sakura the weakest links), they'll use them as a hostage. But I think the K11 members (including the ones I particularly mentioned will probably pull a Kiba as a courageous act. I'm going to say we take those 4 out of the fight potentially because of the dangers Sakon/Ukon present.
So now we have: Shikamaru, Choji, and Kiba (battle-weary) + Shino, Ten Ten, Rock Lee (Fresh) vs VOTE Sasuke.
How do they defeat 3T sharingan? Rock Lee.
Rock Lee goes 5 gates and breaks every bone in Sasuke's body, something part 1 Naruto wish he could've done.
Rock Lee goes 5 gates and breaks Sasuke's bones.