Minato learned sealing jutsu from his wife, an Uzumaki. His sealing jutsu surpassed Tobirama, a relative of Uzumaki. He surpassed Jiraiya's SM, something only an Uzumaki and a Senju have done.
1. That's not a senju feat, he only learned one sealing technique from Kushina. Hashirama doesn't know any uzamaki seal technique, does that mean Minato is more senju than Hashirama?
No.
2. I didn't read anywhere that Minato surpass jiraiya.
And kabuto>>>Minato in Sage Mode. So that's not something only a senju has done. Only one senju we know can use Sage Mode.
Kakashi has done nothing to compare him to any of the Senju or Uzumaki we know whereas Minato has with not only one feat but multiple. At one point you can't just say "it's coincidence"
Neither of them has done anything to compare them to senju, and there is no "coincidence" it's just feats that Kage level beings can do kakashi included.
Orochimaru can can uzamaki techniques and senju techniques, and even Hiruzen can do the very same uzamaki sealing techniques as Minato. Stop hype shit out of nothing.