I think it says a lot about the state of boxing, that I feel I can't answer the question because I haven't seen enough of the "former world champion"
I mean, Glazkov hurt himself early, and Joshua took Martin out early. I've seen him in all of four rounds against anything approaching contenders. The rest of his fights are just building up against journeymen, really.
He didn't look great against Joshua of course, but who knows. Joshua could still turn out to be a glass cannon, again, who knows? Martin could (conceivably) come back and have a decent career. The fact that this is the assessment of someone who was marketed as a world champion is the sad part.