The code for the bench is written.. the driver for the Vid Card is written.. Using LOD, you are altering the code and how it is rendered, to me its like re-writing the bench to suit the output you want, name another "Tweak" that does that...for any bench.Copy Wazaa, maxmem, etc for Pi, all they do is set certain parameters, clear out memory, etc to make things more efficient and make the bench faster, that is a tweak.
Setting the Affinity...doesn't change how the CPU runs does it? It just tells the bench specifically where to run, thus fitting in the tweak category.