Last I check Sasuke's bloodline was the key to mastering all jutsu according to Orochimaru's scientific research. She has Sasuke's talent, a portion of his chakra and potential to spam it without blindness thanks to Sakura's chakra control.
There's nothing in the Manga that states Sasuke's bloodline is the key to mastering all Jutsu. Orochimaru stated that Sasuke has the potential to one day surpass Madara thanks to his scientific research. However, Sasuke's Rinnegan is what allows him to break barriers, so it is possible for
him to master various Jutsu.
Sarada's statement of inheriting Sasuke's talent doesn't hold up to be true at all. At Sarada's age, Sasuke had two elemental natures under his belt, he was the number one rookie of his generation, the most talented of his generation, already had an A-Rank jutsu under his belt, and could forcefully improve his Sharingan to second tomoe just because his will wanted him to.
Sarada is nowhere close to Sasuke at all. Maybe one day, because I don't want to discredit her ability if she does one day gain these feats. HOWEVER, I'm not giving false hype for something that will or will not happen. Let's stick to the facts in the Manga, not Data-Book hyperbole's.
Kakashi is nowhere near as talented as Sasuke yet he copied over 1000 jutsu with only one eye as a non-Uchiha.
Kakashi is a fodder I agree.