Just to be a contrarion.. Let's see what I can think of..
1.
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Plus FTG to dodge
2. Not sure how he could handle the defensive capabilities.. maybe FTG inside it, but he can FTG avoid it's offensive capabilities.
3. If he gets caught in genjutsu he's doomed, but somehow I think it would be hard to trap him because of his mobility and intelligence.
Still think that Itachi wins, but only because with his Sharingan and skill with kunai he could easily know out all of Minato's FTG kunai out of the air... a weakness of Minato's I don't think people realize enough.