People, believe Itachi is superior to Minato with all his eye techniques and etc. And the main argument is that Minato has nothing to attack Itachi's susano'o with.
WELL, lets be honest here. Susano'o is stationary. Itachi has no chance against Minato if hes gonna fight stationary with his MS that will only drain his power away. So to fight Minato susano'o is out of the question, unless of course its defense wise.
Amaterasu, can be dodged. Tsukuyomi can be countered by Minato if he doesn't look into Itachi's eyes, (He is a good sensor).
Point basically is : The Yondaime HOKAGE > Shinobi of the leaf. Even Itachi respected Minato's prowess ^_^.