Is something more than Turing complete Turing complete?
Yes. The "complete" in NP-complete and in Turing-complete are two different notions.

For Turing-complete it means (as per the definition in the question) that the system can compute the complete (in the basic English sense) set of Turing computable functions (i.e. it can do at least everything a Turing Machine can).

For NP-complete, it's not obvious that the word has anything to do with its basic English meaning except perhaps in the tenuous sense that the problem has all the complexity inherent in the class, whatever that means.

Another way to express the difference is that NP-complete can be rephrased as "complete for the class NP", whereas Turing-complete does not mean "complete for the class R" (or RE).