Ok people, lets knock it off. Seriously.

We haven't seen Sasuke with the Lvl. 2 seal yet, but he may be able to do some damage to Kimi with it, but only if Kimi is at level 1.

Also Sasuke would never be able to defeat Kimi. Orochimaru favored Kimi over Sasuke and would have used him if it weren't for his disease.