Super-powered compared to humans. Kryptonians on Krypton are still not the same as Terrestrial humans on Earth. More internal back-up organs, much faster healing factor, naturally much longer life spans even under a red sun.
Beyond that, Kryptonians (under any sun) should have only 4 kinds of notably different abilities than Terrestrials:
1. Radiant Energy Absorption (sun-drinking via photosynthesis),
2. Radiant Energy Projection (heat-vision, initially simply as excess energy removal, later weaponized by Kal),
3. PsychoKinesis (flight via internal force field aka modified tactile telekinesis),
4. Super-Everything (almost anything a human on Earth can do, such as lifting or jumping or remembering, a Kryptonian on Krypton can already do ... just more of it, faster, and better).
So, yeah, Kryptonians on Krypton should fly under their power ... but here we're talking at less than tiny fraction of what Kal can do on Earth, in terms of speed and range. They're basically hovering on Krypton.
Once Jor-El and Lara Lor-Van both modify their reproductive genes to safely get their future progeny eventually off-world, they also unwittingly boost Kal's future abilities way beyond any previous Kryptonian's capacity.