Okay, I got it. Makes sense to have this as splat and the quality is phenomenal! I think its no fair comparison to real-world captures, but thats a different story. This serves its purpose for sure :)

Was this done in Postshot?

As a splat, we have the advantage of baked-in lighting details otherwise not as achievable during real-time presentation on the Web. High quality path-traced results like global illumination, indirect bounces, sub-surface scattering, etc, are all achievable in real-time with splats.

Why is this a splat and not a mesh object?

perfect splats

Imagine seeing this in VR/AR complete with annotations and information <3 <3 <3

The only way to get it better is to add MR visualization to it.