I also agree o mean if orochimaru did that much damage just at just over half his true power. So if orochimaru was at full power at the very least sasuke would not only be missing some limbs but nearly dead and lets remember orochimaru killed the kazekage and the 3rd hokagebefor he lost his arms. Which if you forgot the 3rd knew all the fire techniques and most other's and he could mix them. Then agin orochimaru trained sasuke and gave im motervation so in a away orochimaru is the reason for sasuke's power. It's a battle that would be intresting to see when they are both at their best.