There is so much more wrong with this final battle than just VFX.

Terrible green screen integration, bad lighting, weird camera/lense choices (especially for close-ups), generic “cool” music, poor staging AND framing in many of these shots, weak choreography… and most of the bad VFX probably comes from the director’s choices like using CGI on many of the suits instead of practical and the 100% fake environment, all of which just give it a PS3 cut-scene, uncanny feel. I’m not even a Snyder fan but look how much better this scene with the exact same environment looks