Earlier quoted context omitted.
Gold standard? They have not been previously used on us humans and there are far more side-effects w/mRNA than traditional vaccines. I'll take J&J's '66%' over any mRNA vaccine.
Downvotes without replies again. It is definitely worth debate. What if J&J's second shot gets it up to the same 95%? (even if they are not advocating a second shot at this time) After all, these vaccines do not prevent the virus directly, they're just there to coax the body to produce new things. Both teach the body about the spike protein. It does seem like the mRNA vaccines are given a not-yet-due congratulations…
Looking at that comment it might be because it just asserts “there are far more side-effects w/mRNA than traditional vaccines” without any explanation or sources.