Whenever we compare to the quality of sequels it usually goes back to the franchise's formula. I don't think KZ: Shadow Fall is any exception: it's a good game if you're a fan of the KZ series. Quality graphics, and no recoil gunplay. Because of the shooting mechanics, I find it better as a campaign title than a MP title. I think the OWL is a nice little wrinkle though. But if you could never get into KZ, this game won't convince you otherwise.
The ending has a twist. I didn't see that coming. I thought it was a neat way to segue into the epilogue though. I think a lot of people might have missed it because iirc, it runs after the credits roll.
