Agreed.. but whats the best Nikon option for a sports shooter? There really isn't one... its a choice of compromises.
At what level? Mom n dad taking pics at soccer, a D7100 will do just fine.
At pro level when there are other shooters your photos will be matched with? You want top of the line D4/D4s. If you are shooting basketball with a D7100 f3.2, 1/800, 1600 ISO and a guy next to you could be a'using a D4 f4, 1/1250, 3200 ISO.
For argument sake ignore all other variables such as timing and position. The camera will perform better.