A hearty congrats to the Miami Heat on the completion of their forceful comeback over the flailing Dallas Mavericks last night. (Can you hear that? Somewhere, Kobe is seething.) A few years ago, at the height of the Knicks-Heat rivalry, I’d have hated to see this outfit win a championship. But these days, I have to admit, it’s kinda nice to aging stars Gary Payton and Alonzo Mourning (who had a monster Game 6) get rings, to say nothing of J-Dub, ‘Toine, and, of course, the league’s new #1 guy, Dwyane Wade. As for Dallas, it looks like they — and particularly Nowitzki — basically just lost their nerve. As their dive deepened after the Game 3 collapse, they all looked more and more stressed (Avery Johnson’s aggro coaching style probably didn’t help), and nobody ever stepped up thereafter to get ’em out of their tailspin. Still, don’t fret, Mr. Cuban: there’s always next year (In fact, it’s already begun: the Spurs just dumped Nesterovich to Toronto for cap room…) And, now, my full sports attention (research time notwithstanding) goes to the World Cup…