Originally Posted by Human Rasengan
Itachi can stop Hashirama with Genjutsu and nullify his wood techs with Amaterasu
I agree with everything in your post except the statement above. The reason I don't agree with it is because we still don't know EXACTLY what Shodaime was capable of doing. If he's fought Madara's multiple times in the past (and able to hold his own), then it's safe to assume he knows how to deal with the Mangekyou Sharingan and some genjutsu attacks (meaning Itachi most likely won't get the chance to use genjutsu on him).