[krastanov]

Calling it a "debate" might be giving too much credit to D-Wave. Nobody, not even they anymore, is claiming that this is a machine capable of more efficient computations than a classical Turing machine (as opposed to a quantum circuit). By "efficient computation" I mean asymptotically polynomial.

Moreover, experimenting with the actual hardware has shown that a classical computer is practically better than this machine (in terms of money, electricity, or time).