word of mouth
its easier for the average joe to see their friends opinion than Larry Blogger's critique.
for instance, my facebook was littered with 6/10 ,6.5/10 (which sidenote made me be like damn i guess i gave it too high a rating

). thats multiple opinions usually from like minded people all in one stop
so its easy to say it was the critics, but people have been waiting to see this for years, its more likely they were turned off from their friends who were underwhelmed at the opening weekend