  Evaluating the performance of quantum devices is an important step towards
scaling quantum devices and eventually using them in practice. The great number
of available quantum metrics and the different hardware technologies used to
develop quantum computers complicate this evaluation. In addition, different
computational paradigms implement quantum operations in different ways. We add
to the landscape of quantum metrics by extending the Q-score metric of Atos to
the Q-score Max-Clique. To our knowledge, this yields the first
application-level metric which allows comparison of three different paradigms
of quantum computing. This metric is evaluated on these computational quantum
paradigms -- quantum annealing, gate-based quantum computing, and photonic
quantum computing -- and the results are compared to those obtained by
classical solvers.
