models will always have worse lighting than brushes
#.
thick ore
that said, that looks like a hammer screenshot; compiling VRAD with -StaticPropLighting and -StaticPropPolys is required to get the most accurate lighting on static props (too slow for H++ to have in lighting preview)
what compile settings?
add -staticproppolys -staticproplighting -textureshadows to the $light_exe parms, like so
without staticproplighting, static props will only get their lighting based upon a single point, which in this case is in shadow
thick ore
Does the texture have a bumpmap? That'll make it fall back to point-based vertex lighting, even when using those parms
thick ore
if the surface becomes purple when setting the cheat cvar mat_normalmaps to 1, then there's a $bumpmap in the VMT that needs to be removed for static prop lighting to not be mediocre