The biggest problem the Knicks face when they go small with Carmelo at power forward is their lack of rebounding.
While Anthony is a good rebounder when he wants to be, he goes through stretches where he looks disinterested on the defensive end, often giving up easy rebound opportunities for opponents.
He's not the only culprit, but on the season the Knicks are 27th in rebounding, averaging only 40.5 rebounds per game.
The Nets are a little better, ranking 15th with 42 rebounds per game, but are second in the league in rebounds allowed at 39.96 per game. The Nets also have two above-average rebounders at power forward, Reggie Evans and Kris Humphries, and have arguably one of the best centers in the league.
While Brook Lopez may not be the best 7' rebounder in the league, he has been effective when playing with off-season pickup Evans. Grantland's Zach Lowe explains:
The Nets have rebounded 81 percent of opponent misses when Lopez and Evans play together, but just 62.2 percent when Lopez plays without Evans, according to NBA.com. The former mark would rank first overall, while the lower number would rank dead last.
Lopez is not the most effective rebounder alone, but when placed next to an elite rebounder, he and the Nets improve significantly.
The most telling stat, though, is their rebounding difference.The Nets are ninth in the league on the season, averaging 2.04 more rebounds per game than their opponents. The Knicks, on the other hand, are 21st, grabbing 2.14 fewer rebounds than opponents.
When games get tighter towards the end of the year as the playoffs near, every possession will be that much more important. Giving extra possessions will ultimately sink a team, which is why unless the Knicks improve their rebounding, they will finish behind the Nets.