@Ancient_0f_Days: I don't think John outclasses Blue Marvel by much.
I know he doesn't, but John by my understanding has better reaction speed feats. That kinda matters considering how powerful Blue Marvel is, John would need to make a construct quickly if he didn't want to get pounded on or blasted. John can also teleport if he needs to, but I don't see him using that since he rarely does it at all let alone in battle. But...he did do some damage to Superman, bypassing some of his invulnerability by attacking his eyes with a construct.
In fact, he's been able to best the Justice League, with a massive sneak attack. The roster included Aquaman, the Flash, Zatanna, Batman, Superman, and the last one standing, Wonder Woman.
@Ancient_0f_Days: I've never seen those scans, where was this?