Nick and I have had many a laugh over New Yorkment.
The HORRIBLY DISTURBING part is that...they're...actually kind of good.
Not terribly impressive imo
That's true, since Devourment is different from brutal bands like Deeds Of Flesh. That said, there are many more "slam" style brutal bands than DOF-style riffing brutal bands, so CC isn't exactly off the mark saying that.
Enemy, the stuff you're asking for isn't brutal death, you want Carcass worship stuff in the vein of Necroticism. I'll recommend you check out Aborted - Goremageddon: The Saw And The Carnage Done and then maybe progress to The County Medical Examiners - Olidous Operettas.