Playing defense in the NBA is more about knowing your players tendencies and communication.. In college you can get a bunch of nonathletic white boys who will choke most teams offense down, not with ability but with knowing their roll and when and how to rotate.. People call Love a bad defender but in reality PF and Centers are really a tandem thats more accurate is you judge them together rather than as individuals... For example Gasol and Bynum as a tandem were lights out, where individually they sucked.. The playoffs just proved how Ibaka Perkins were effective together, and Gasol and Randolph are one of the best defensive tandems but individually not so great..
With Love he was paired with Peković a player who had almost identical defense skills as he, and instead of complementing each other with variety, they sort of overlapped their inability.. On the Cavs Love will be teamed with Andy and Thompson, two players who game is totally opposite from Love.. This way with proper communication Love could stay in his lane playing to his strength while they complement him by playing to theirs, very little overlapping and much more complementing..
With Waiters and Irving, young guards tend to be over aggressive and not understand where the help is, this is where LeBron can help, James will be their field general, calling the picks and reminding them where the help is, this way they wont try to guard the whole floor but rather switching off as soon as they guided thier opponent into where help is waiting..