He might be the best wrestler to ever live and it's not his fault that New Japan doesn't have prime time TV anymore. In fact, the business growth that NJPW has seen while he's been on top without prominent TV is a testament to how big of a star he is. The bar for enshrinement in any hall of fame isn't to clear the best of all-time (which Okada has a claim to being as a wrestler.) Very, very few people would get in. Hogan or Inoki aren't the bar for this HOF in the same way Babe Ruth and Hank Aaron aren't the bar for the baseball HOF.