This really is apples and oranges for me. Freaks and Faces are both quite good, although not quite as good voerall as the basic premise of Freaks would suggest. The whole thing ends up being a silly comedy that is a bit like an extension of a Future Shock, and is amazingly 80s (even the 2000s-penned seuqel feels 80s)
Dredd (movie) is just a weird thing that exists to be an alternate version of Judge Dredd, trying quite hard to feel like the movie version but after like two stories that's just not possible, it has to be it's own thing. But for me, each new story got better and better, and the final Dark Judges tale was really very good, properly weird.
I want to vote for Freaks because it's an original story, not an follow-on to an adaptiation. But, you know, the good bits of Dredd are too good to ignore. Dredd it is.