The REAL reason behind the bad reviews ...
the reviewers are being honest.
It wasn't the worst movie I've seen, not Starsky and Hutch bad. The cgi was pretty decent. The leads are good. Bryce Dallas Howard is a good actress, attractive, but she looks like Opie with boobs and I can't get aroused about that. Chris Pratt is believable and fun to watch. The gratuitous "we need someone who isn't white" kids were awful, I spent every second of the film hoping they would die. The story was overcomplicated. Great use of shadow and implied violence, thank you for that. The bad guys were twisty mustache evil B-movie villains; what I'm saying is they were one dimensional and boring. Their comeuppance was expected, telegraphed, and obvious. The 'bigger bad' dino was unimpressive to say the least. There were some legitimate laugh out loud moments. The 3D was an afterthought, just see the regular version.