Agreed. These look great in a very Alex Ross-y way, but with the scale they're in they won't fit with any other line, accessory, or diorama. I guess you could fudge Darkseid in if you wanted him to be huge.
I bought several of their new Batman movie line, and all of the nice things I've had to say about Beast Kingdom are now out the window. I ordered 3 (Forever, & Robin, and Begins) from BBTS, all arrived in the same box, and all are either completely broken out of the box or (Begins) really bad QC.
Here's a video on it. If you don't want to watch it, I'll just say - buyer beware. I was going to be all-in on their new comic line, but after these movie versions I think I'm out on BK. Shame, because their sculpts are so nice.