Citation needed. AFAIK real FP16/FP32 HDR lighting was unattainable on consoles until the 360/PS3 era which possessed GPUs that had the DX 9.0c feature sets which made them capable of doing so. Even then, it's still computationally expensive.
I can't find a video or photo of cursed mountain using, but I remember I could see it on the water when the buildings cast a shadow. I could tell because of the way the light looked(it wasn't fluorescent looking like bloom) and it was curved/rounded kind of. It also bent around the corner a little. Its listed in the HDR wikipedia. Type in Athena. That was the name of the game engine