And what even is AOW?
Our certifications are NAUI, from 1980 through 1982. Our initial certifications were "Scuba Diver", which involved copious air-sharing, mask-off, regulator retrieval, ditch & don at depth, CESA, and other drills that are for the most part not a part of OW training. It took 12 weeks of classroom and in-pool training. My son's PADI AOW didn't approach that "basic" course. Our "Advanced Scuba Diver" certifications took an entire college semester (although probably would have been less if not done for credit!) and included multiple forms of search, rescue, and recovery, navigation, deco theory, chamber rides, etc. When my wife's card broke and she sent to NAUI for a replacement, they sent her a "Master Scuba Diver" card. My card is just a bit cracked, so I still just have "Advanced Scuba Diver".
So, two divers who went through the exact same training together in high school and college but with different C-cards. I feel confident in claiming that NAUI "Scuba Diver" from 1980 involved more classroom and pool training than PADI AOW today. Even then, the cards tell me hardly anything useful about the diver - if I hadn't been in the water for the past 40 years it doesn't matter what my card says. Lots of divers aren't merit badge collectors and only get training or certifications when they need it, even while they're racking up considerable experience.
In the card vs experience debate, consider the pilot's license I got at the end of my junior year of high school in 1979 and instrument rating I got later that year, never to fly again. Sure, it's expired, but I have the card. Would you rather have me fly you around today, or a freshly-minted private pilot? Or, my medical license legally entitles me to do surgery and I was pretty good at minor procedures at the end of my internship in 1989. If stranded in a remote location with my wife and a 4th-year medical student, I know who I'd want to do an emergency appendectomy (or even a skin repair) if my wife needed one, and it would not be me.