Yes i already mentioned that in my previous post, that is the only thing he had and he used shunshin there which all 3 of the people i mentioned have.
Itachis feats are blitzing Sharingan Sasuke and kicking him and jumping right in front of Naruto and KB with shunshin as well as later going behind KB back without him noticing.
Minato did not use Shunsin no jutsu while he saved Naruto from Tobi, Minato use his normal speed, he's the fourth hokage after all, why would Naruto been killed easily, if Minato did not do that..................Minato is not a type who let his friend or a near family die without a reason, he's a good man.
Itachi and guy are very fast at their base speed, but we haven't seen so much of minato's normal speed yet...............
One thing, how did Minato saved Kushina so fast and were up on a tree, yes he used the ftg tech, to save her...............but how did he use his normal speed so fast, I am gonna show u :
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How manage Minato to run so fast and was on the tree so easily, that was his normal speed.....................he teleport to Kushina and avoid Kurama's attack, and then he stood on a tree in one seconds, that is faster than Guy's base speed.
Minato did not use any ftg tech to climb up a tree, he used a normal speed or his base speed.