See screenshot. These 3 objects (close up of banquet seating) have the exact same material on them, except the furthermost left one. The only difference with that one, is the jpeg used for maps are also plugged into UVW Randomizers.
It looks to me as if the normal map is being inverted when plugged through the UVW Randomizer. Which in turn is making it "shinier". I've no idea if thats because of the inverted normal map or if it's also inverting any of the other maps i.e. bump, gloss etc.
Max 2021 Corona 8 HF1