I totally agree. The majority of the opponents just don't comprehend what it is they're walking into. Say what you like about Wlad (and I often do) but he's been, over the years, the best of the crop by some margin. Just showing up isn't going to cut it. At least Fury understood that. If nothing else, he had total concentration and was focused on keeping himself on the move. I think Povetkin understood what he needed to do, as well, but was severely hamstrung, during that affair. I think, other than Haye, it was Chambers who frustrated me the most. Fair enough, he was undersized and had no power but, I swear there were moments when he was just tracking Wlad's left glove with his face, not the other way round; with him holding that high guard up in pained anticipation. Haye just left me speechless. He could have made an impact but, quite blatantly, sat it out. Joshua, who has been brought along as 'that nice [big] lad, next door' could do some damage. I think he has a streak of fire in him too, which the public hasn't seen yet. Nothing less will do. He must commit. But, I've seen those fires go out real quick and, as you suggest, any kind of hesitancy (which I do think is likely on the night) and Wlad won't mind taking control.
Joshua definitely has a darker side to him. I just rewatch his fight vs Dillian Whyte for the next breakdown and Joshua was taunting and talking to Whyte (not to mention beating him badly) the entire first round. He's got more edge to him than many would like to admit. Maybe Whyte just got under his skin, maybe it was his true self coming out, but either way and angry AJ is a really good watch.