terrible. Yeah, pretty terrible. Sony is already in full damage control mode, because they know the only shot they have in making their money is in the first weekend. There is a review-embargo in place until street date, and the early screening agreements basically say you can break the street-date review if you are positive. About 3 people got to see an early screening without signing this agreement, thus we are getting an accurate picture of the film.
Remember guys, BvS also had early glowing positive reviews before street date.