DB, your right about the Bloodline Limits being abilities. Sorry about that. And also about what you said, the Bloodline Limits give special abilities liking copying others techniques and hitting tenketsu's. Tsunade is very strong but having that kinda strength isnt giving her an ability to do what others cant. For all we know, Itachi could also have that kind of strength and his Bloodline as we all know is his Sharingan.