Bass doesn't have to be in dubstep levels of obscenity, but when New Yorkers wonder why they never get their records in competition with the rest of the hip-hop game, that's the key right there. You go from four or five records where the bass can go from melodic and subtle to air-pocket levels, and it's a physical sensation... and then all you have is either some old dusty snare that Alc/Just engineered into 'perfection', or you have some really embarrassing clap. And to the traditional NYC mind, THAT'S the important part. Rest of the country doesn't think like this, it's weird.
A great example was the Juelz/Banks song last year. You had all the similarities to a southern record in 'formula' (the whole scale water-drip synth sound, 808 kick; actually kinda more like a Clipse record than anything) but when it came to the low end, you had just one occasional bit of kick. Other than that, it was wandering in the desert.