I'm calling this out. Minato invented the Reaper Death Seal, Flying Thunder God AND Rasengan. The Rasengan was basically a Bijuudama in human form, a concentration of chakra and the pinnacle of shape manipulation. He was also able to find the exact number of enemies in a forest by simply putting his finger on the ground to sense them. Using his S/T technique, he can teleport to seals he places on objects, objects that are moving, he can send attacks at any suitable place he wants to (with or without a tag is questionable), and was able to teleport the entire Kyuubi. Not only that, but he also created a whole barrier, which stopped Hiruzen from getting in and the Kyuubi getting out by himself. Minato has summoned Gamabunta, and it states that whoever summons the Chief Toad has the potential to summon any toad. Minato sealed the remaining bit of chakra that he DIDNT take from the Kyuubi into Naruto via his own jutsu. As for intelligence, he carried out a plan on Naruto's life, tracked Kushina's kidnappers as a kid, identified the weakness in Kakashi's Chidori in one usage.. and much much more.
Even if he didn't have these feats, several amazing shinobi have quoted him to be the pinnacle of success and some say that he's the greatest shinobi they've known. What's funny is that he can achieve all of these feats on the limited screen time he's shown...