Sky's professional standard install

Satellite TV company Sky had a promotional van parked in my local town centre today. Among the services and products being promoted was a "professional standard install". This could mean:

a) The standard install(ation) is professional. In which case, are the other installations unprofessional?

b) The install(ation) is of a professional standard. In which case, why is it not simply a professional install? Perhaps it's carried out by amateurs but to a professional standard...