I have been seeing legitimate concern with the response of "i want the better one" or "i want the quicker one" because these are being each obstacle to quick sp

I have been seeing legitimate concern with the response of "i want the better one" or "i want the quicker one" because these are being each obstacle to quick spread of vaccine. But attempting for to say only "just as good" or "no difference" is only creating more mistrust between public with agencies that already having great mistrust from public.