Yes, but Minato made that decision because he knew he was about to die. Itachi had the many years he was in Akatsuki to come up with his back-up plans should Sasuke not return to the Leaf, one of which was only a possibility because Shisui wanted him to take his eye.
Besides, you're only looking at what they planned out after their deaths. Look at the battles they were in in life. Itachi did things mostly out of instinct or when he saw an opening. He sealed Nagato with the Sword of Totsuka cause he saw that opening. When talking about Minato, I thought back to his battle with Tobi and A. He analyzed Tobi's technique, found its weakness, and made a plan to get him to turn solid. With A, he placed his seal on Bee's tentacle SPECIFICALLY for when A attacked him, cause he knew that if he tried to attack again, he would probably kill him when he came out of the FTG jutsu. That, to me, was the ultimate insight to his strategic genius. He saw a possibility, not even that big of one, and acted to prevent it. The ONLY time I remember Itachi planning ahead in a battle was when he sealed Orochimaru after trying to get him to reappear. Now please, reanalyze your data upon reading this. Not hatin', just sayin'.