I have heard this is the case but can not find a source even discussing this.
Can any problem that can be solved by a Quantum Computer, also be solved by the quantum circuit model?
I realise that even if this is true, it won't always be the best option, I mean theoretically.
And I have heard that CNOT gate combined with arbitrary rotations allow to implement any gate. But nothing that makes it clear that the circuit can do anything.