I'd find this more compelling if you looked at a few thousand Vanta or Drata reports grouped by auditor. You're going to find the same commonalities with only trivial language differences.

SOC2 reports are private between you and the auditor (that way if you "fail" you can just find another auditor or have a re-do, and no one is the wiser), and basically always gated behind a sales touchpoint (another hint about what utility they provide). I guess the Delve ones leaked which is why they can all be compared.

220 out of 494 "no exceptions" seems quite high to me. Nobody I've ever dealt with allows an exception to make its way into the report.