People who compare an iPhone to DSLR don’t know cameras. An iPhone will never replace DSLR’s and for a smartphone it takes excellent pics but has its limitations whereas a high end dedicated DSLR doesn’t. You can reduce sharpness when you edit the photo after it’s taken. Or play around with the various photographic styles and you can edit your own. ProRaw will get you more comparable results to a DSLR especially if you set it to 48MP.

You can also look at third party camera apps if you wish to tweak things even more.