I give this movie a 3 out of 10 for effort. It was visually bland, not at all futuristic looking. Wrong choice of actor; the guy was way too small, scrony, his helmet looked too big for him. He had the right look on his face for the character type, but not a strong gruff enough voice. The story was bland, not much going for it.
The slomo I assume where for the 3D more than anything, and looked terrible.
I think this movie was made more for Dredd comic book fans, which runs into the danger of not appealing to people beyond that small circle. Would explain why it flopped.
The Stallone version is one of those old action classics of the time, had good visuals in the blade runner style and had decent action.