Orochimaru was also able to handle the Nine Tails while in his weakened state. That and the Sannin are all Kage level anyway. 
The manga and databooks also describes A-Rank as Kage level. 

Also, the Third Hokage was no slouch. He fought Orochimaru plus the First and Second simultaneously. 

However, I didn't necessarily use Orochimaru as an example as he can't, as has stated he can't, hold a candle to Itachi, a fellow S-Rank. I honestly couldn't see Orochimaru beating any of the other aforementioned S-Rank Akatsuki members I mentioned either. He's a poor example, though, as seen with his fight against Naruto and how he's revived himself like 3 times already, he is hardly lacking in power.