# Can D-Wave machines solve QUBO problems more efficiently than gate model devices?

I'm new to quantum annealing and D-Wave computer. I saw that it has about 5000 qubits which can solve a QUBO problem with 5000 variables.

From my understanding, if we use a gate model device, say, an IBM quantum device to solve a QUBO problem, the number of variables is equal to the number of qubits. Is that correct? If so, does it mean that DWAVE can solve larger scale problems than these gate model devices?

In terms of the resulting fidelity, which one is better? For example, if we want to solve maxcut problem, is it better to use the D-Wave machine or QAOA?