This is the most ridiculous post I have ever seen.no, he would. Alot of trouble. His strong point is genjutsu, that's countered via closing eyes. Amaterasu? Rotation. Susano'O ? Vacuum wall palm. All itachi has left is taijutsu, and hiashi is better in that by far.
Do you even know who Itachi is? He is probably the best Genjutsu user in this manga. Simply closing your eyes is useless when Itachi can use Genjutsu with just his finger.
Air palm shattering Susano'O? So, air palm can break Yata Mirror? How will he counter Totsuka Blade?
You have got to be kidding? Please stop talking.