Fred

However, imagine the reflexes of the Z fighters. From what I've seen(referring to anime, so you can choose to reject this) all Sharingan techniques revert the three pupils towards the middle in a spiral, release outward, and then the attack is in effect. However, this doesn't guarantee Vegito would teleport away, but he would know something is up. And think about it, in a situation where the attack would hit Vegito, he might knock out, or even more so, Goku and Vegeta have dealt with death hundreds of times, a technique like Tsukoyomi might not even phase him. He might even just come out and sodomize Itachi with his own nail polish bottle.

Edit in respond to Island's post: But how would he obtain control over his Chi/Chakra network(the only way Genjutsu works) if the capacity of Chakra is that much larger than his own?

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