I'm pretty sure PP euro L is the lower saps oil of the two which is about 8. QS euro has the bmw ll-01 certification instead. It being a3/b4 as well means it has to be at least 10.
The ll-04 spec is supposed to be a lower saps version of ll-01 so i imagine drain intervals could be a bit shorter than ll-01 but starting tbn isn't as strong of an indication of an oil drain capability anymore.