Sure you are right. This is just a computational Perspective. Gottesman-Knill Theorem: "The theorem proves that, for all quantum algorithms with a speed up t

Sure you are right. This is just a computational Perspective. Gottesman-Knill Theorem: "The theorem proves that, for all quantum algorithms with a speed up that relies on entanglement which can be achieved with a CNOT and a Hadamard gate to produce entangled states, this kind of entanglement alone does not give any computing advantage." Entanglement alone is not sufficient for algorithmic speedup. Again Wikipedia: "The reason for the speed up of quantum computers is not yet fully understood"