[OscarCunningham]

And also, qubits can't be used as compressed data storage. Despite the fact that it takes two real numbers to specify the state of a qubit, you only get one bit out when you measure it, with the rest of the information being destroyed.

[diegoperini]

The whole point of Quantum Supremacy test is to show that qubits can in fact store distributions in their state which is another way of saying some carefully crafted equations are storable inside qubits as long as you are interested in an approximate and numeric output. One can argue a MIDI audio or a SVG graphic is exactly that, a carefully crafted equation which even in its lossy form (mp3, jpg) is able to convey meaning.