Here’s all you really need to write when trying to crystallize the cavernous wealth of talent backing the Heat in these 2013 playoffs: The soon-to-be all-time leader in postseason three-pointers is coming off the bench. With 315 career playoff three-pointers after the Heat’s 110-87 victory Sunday, Ray Allen stands just five triples from matching Reggie Miller for the NBA’s all-time postseason mark. Allen and his patented jump shot have now participated in the playoffs with four different teams. Coincidentally, his postseason career began with the Milwaukee Bucks, which the Heat leads 1-0 in its best-of-7 first-round series. So there he was, Allen, the future Hall of Famer, the 17-year pro, already the NBA’s all-time leader in regular-season three-pointers, doing pushups after practice on Monday for losing, of all things, a three-point contest to LeBron James. Like Allen’s shot, the form of those pushups was uniform and perfect. “Y’all should be glad we’re not playing for money,” James joked as he stood over Allen and Mario Chalmers like a drill sergeant and counted off his punishment to the rhythm of a bouncing basketball. The scene was ironic in a way, and not just because Allen and Chalmers grew up the sons of military men. James’ marked improvement from the behind the three-point arc this season could, partially at least, be credited to Allen, who came to Miami from Boston last summer and brought with him that iconic work ethic so respected by his peers. For years, Allen has been arriving to arenas on game days hours before his teammates to practice his shooting. At beginning of the season, James began joining Allen for many of those pregame sessions. Always a learner, James tweaked his preparatory habits based on Allen’s influence.