This is a great line in that article you posted...
Post# of 36537
Quote:
Researchers say it is “not yet established” whether the antibodies translate to protection against SARS-CoV-2 infection, but the results do imply that the vaccine has the potential to offer “durable immunity” against disease.
So researchers have not yet established whether the antibodies from the Moderna vaccine protect against covid. However the results "imply" there is a "potential" for immunity.