Sasuke vs Orochimaru: People like to say Sasuke owned Orochimaru? Hell no, Orochimaru was weak and could not use his arms (and so his strongest techniques). Sasuke surprised him and turned Oro's cheats against Orochimaru himself. This was a victory without honor.
Even if he wasn't sick, Oro would have tried to take Sasuke's body the same way and the same thing would've happened.
Sasuke vs Itachi: Well, everyone knows Itachi could have killed Sasuke easily, but he let Sasuke kill him. Dat brother-love. With other words, Itachi lost to himself.
Sasuke vs Deidara: Deidara would have destroyed Sasuke, but Sasuke used that snake at the end... Silly victory. Silly plot (no jutsu).
Sasuke had Oro's powers and had every right to use them anytime he wanted, since he almost died for it and took it himself and all.
Sasuke vs Killer Bee: Killer Bee was owning Sasuke very hard... Sasuke had luck team Taka was around.
Yeah, Killer Bee managed to land a hit on him two times, he sure was pwnong him so hard! (sarcasm). Killer Bee was lucky that.
1) Sasuke was fighting to capture, not to kill, so he was holding back
2) Sasuke just got his MS and didn't know any techniques till he unlocked amaterasu at the very end and had lost his curse mark and snake summon
3) Sasuke was still injured from his fight with Itachi
4) Gyuki was there to help him and save him on multiple occasions, like when Gyuki released him from the genjutsu Sasuke put him in.
Sasuke vs A: There was no victory here, but if this fight would have continued, A would have won.
What evidence do you have of this? That's pure speculation and you know it.
Sasuke vs Danzo: Danzo underestimated Sasuke and was already thinking about Tobi. He lost because of his own fault. Still, Karin needed to save Sasuke 3-4 times in this battle (since Sasuke could not notice Danzo's movements).
Karin saved absolutely no one. Sasuke noticed Danzo's movements and found out the secret to Izanagi on his own. Read the manga again. Not to mention he killed Danzo 10/10 times.
Sasuke vs Kabuto: Sasuke was lucky Itachi was there. Else Kabuto would have won without difficulties.
Dude, the same can be said about Itachi. They were a team helping each other out. Don't zero in on Sasuke and criticize him.
I am not hating here, folks. I am just wondering when Sasuke will finally win a battle like a badass (Naruto, Obito, Madara, Kakashi, Hashirama, Itachi, Lee, ... had there badass victories). Not with luck, bullshit or plot no jutsu.