Maybe it just depends on your needs...
If you want to replace the WAD to benefit from a higher resolution, it turns your clean wall in a dirty wall.
Which is not like it was advertised:
Replacement for the Gamestudio standard.wad file. All surface textures were carefully remade in true color and double resolution, including normal maps. Replace the standard.wad file with this wad and greatly improve the look of your levels!
Yes, it has a high resolution, but you will notice the changes.
All textures from the second image have a very dark spot which is something to avoid for a tile if it is intended to be used on a great area like a long floor, long wall or something like a stonebridge.
Normalmaps are fine, double resolution is great - but these little things are annoying if found in a commercial product.
