Difference between automatic LLE modules and liblv2.sprx only?

I want to know the difference between these two methods of loading PS3 firmware modules. Is there any FAQ about it?

Not yet, but as far as I know liblv2 is responsible for module loading and unloading on a real PS3, and thus this method is more accurate. Among many improvements this allows modules to be loaded (and unloaded?) dynamically. The old way of doing it just loaded everything from the beginning.