Think his place on the passing leaderboard is as much a function of the league becoming more pass-focused in the era he’s played in. You’d expect Roethlisberger, Rodgers, Ryan and possibly even Stafford to have passed him in one or both categories by the time he’s eligible. I do think he’ll get in fwiw, but he might have a long wait if he doesn’t get in first time as he’ll likely be joining the queue behind Brady, Brees and Roethlisberger.
Megatron’s an interesting case, his achievements mean he should be first ballot but the crotchety old Footbaw Men who vote for it probably don’t like that he retired early. Think Reggie Wayne might get the nod ahead of him for having a longer career (and a ring).