MEGASCAN assets

Hi dears . i use megascan since many years now , and in despite of all these demos from unreal engine 5 like " the electric dream " demo , i noticed , all these megascan assets from all demos they promote for , are all scams . they are realistic only in their demos , but when i see the quality of these assets when i download them from bridge megascan , we are joked by quixel and unreal engine . in addition , whatever the lighting quality , i have no megascan asset from bridge seem realistic once i put them on my scene . i think honestly that quixel is trying to scam us !!

… screenshots? And when you downloaded them, which quality setting did you use?
I downloaded an object in all 4 qualities, and the Low uses 1k textures, Medium 2k, High 4k, and Nanite 8k textures.

The test object:

thanks for your response dear . i use the nanite quality of course .but i noticed they are less realistic than on their demos like electric dream for exemple , and i wonder why .