I went back and read the original Scuba Diving Magazine article (which I probably should have done before posting the Cayman Compass article), and actually most of the blame should go to that world-class news outlet the Cayman Compass. They reported Scuba Diving Magazine’s readers as voting Cayman best in the world, whereas all the votes/awards were by region. All of the Cayman rankings were only within the Caribbean/Atlantic region, not the world. So blame the hype on the Cayman Compass. But you can’t blame them for the rankings – that was the result of votes submitted by 3000 (according to Scuba Diving magazine) readers.
The Cayman rankings (all for only the Caribbean/Atlantic region):
Voted #1 in the Caribbean for visibility, best underwater photography, best technical diving
Voted #2 in the Caribbean for conservation efforts (Bonaire #1), best big animal encounters (Bahamas #1), best wreck diving (Bahamas #1), best wall diving (Mexico #1), best beginner diving (Bonaire #1), best overall diving (Yucatan #1)
Voted #3 in the Caribbean for best macro (Bonaire #1), cave/cavern diving (Riviera Maya #1), best shore diving (Bonaire #1), best advanced diving (Yucatan #1)