Because my friend, if you get a lot of Ninjutsu, the damage will apply after the Resistence of the enemy, Ninjutsu *ion instead, will break the Enemy Resistence, my advice is to Lvl up first HP, Attack, Defense and Resistance, and then, everything else. http://image.prntscr.com/image/66a7fecf033c4e3d85c1dfb84d2fb6f3.png