Bass is weird. Sometimes I wonder if part of the reason the Olive curve has so much bass is because he used limp-dick sounding headphones while telling his test subjects to have at it with EQ (to arrive at his rando consumer preference curve). Both Audeze LCD series and STAX have measured flat bass (and in the case of SR007 similar FR), yet the Audeze's have monstrous bass. Another reason could be what Tyll had speculated: headphones don't have the physicality of speakers, so people crank up the bass. Most people do like extra bass. Heck, I do, especially in a car so I can hear bass over road noise.