Likewise the distinction between light (low waxcontent) and heavy crudes are important for similar reasons, most refineries cannot process both equally well.
Heavy crudes (high waxcontent, high API viscosity, high density) cannot be refined efficiently by refineries geared to refine light crudes and vice versa.
Its advocates will wax poetic about audience size and time spent being entertained online, as if the Super Bowl content was the same as a new movie or pop song release.