as you say,a 7 jumpshooter,16 defender doesn't exist on the market
why?because a player with 7 level jumpshooter and 16 defender is more slowly to develop,so when he'll reach the level of TORLVX at the age of 20,he'll be older then him,so you will pay a lower price for his age.
And jump shot training is more more faster than defence,you cannot make a so easy comparison,you have to consider the possibility of training.Three levels of jump shot request few weeks than 3 levels of outside defence