I agree with you; something is wrong
There is something wrong about this user rating.
I didn’t saw Dead Line but I just saw another film from Esquenazi: Bone Breaker; the scariest film I have seen in my life, and I am going to rent Dead Line tonight. It doesn’t make any sense that the great majority of users like a film and the film obtain a low rating.
It is unjust as much for users as for the filmmakers.