Are the NY Knicks defensively competent?

Joe Frazier at the Knicks game
in a badass Cowboy hat

Last night the Knicks laid the smack down on the Utah Jazz 131-109. Gotta love beating up Mormons. As good as the win was though, I have recently heard and seen a few people complain about how horrible the defense has been since the Melo acquisition. Given how initially upset I was with the trade, you would think I'd be one of those critics as well, but I've actually been quite impressed with the Knicks defense over the past few weeks. First let's start with this game.