NEW YORK — As Knicks president Leon Rose, senior vice president Gersson Rosas, and senior basketball advisor William Wesley watched their team romp over the defending champion Denver Nuggets at Madison Square Garden on Thursday, a sellout arena collectively came to the same conclusion. Damn. That OG Anunoby trade worked out pretty well. Less than a month ago, the Knicks were in freefall defensively and allowed 120 or more points in nine of the 13 games preceding the deal that sent RJ Barrett, Immanuel Quickley and a valuable second-round pick to the Toronto Raptors in exchange for Anunoby, Pre…