As the maker of the tool said, mostly this is for people to REDUCE quality levels for acceptable performance with a heck of a lot more control than the standard options give you. These are almost all if not all things you can set in the console, its easier to do it all in a batch file as loading and gives you options like no intro.
I'll have to read up v1.4 no motion blur caused big problems, thats the one thing I hope he can find a way to turn off properly, the motion blur is awful.