No, it does not. 5000 polygons condensed into a fraction of a pixels becomes a matter of statistical distributions. Effects like displacement and bump mapping have different looks if you filter them to get one value per pixel. The illumination changes because you get one averaged normal instead of distribution of normals that would occur naturally.
To have this much detail is a brute force and overkill way to get the distribution of samples that you really want on a sub pixel level, but sometimes these things are done in film because with a lot of pain you can make it work.
In this case if they did actually do that, it is through instancing, which in a sense could be thought of as a lookup with polygons to ultimately get that distribution. Usually a huge amount of samples are needed to deal with aliasing as well.
To have this much detail is a brute force and overkill way to get the distribution of samples that you really want on a sub pixel level, but sometimes these things are done in film because with a lot of pain you can make it work.
In this case if they did actually do that, it is through instancing, which in a sense could be thought of as a lookup with polygons to ultimately get that distribution. Usually a huge amount of samples are needed to deal with aliasing as well.