BS!!!!The issue is induced antibody production versus neutralizing antibodies. The manner in which the S protein is exposed to antigen presenting cells with the vaccine allows more of the S protein surface to be presented to the immune system. And its not one vs the other. People in the prime of life who have a very robust immune system will have a more multi-faceted antibody response, and hence the probability of strong neutralizing antibodies, than older folks who get the vaccine.