Hughes cam?

Rat Bastid said
It’s not just about peak horsepower (it just KILLS me to say that) but it’s about power under the curve, manners, driveability, idle quality…things like that that don’t show up on a dyno.

My math above comes right off the Howard’s lobe list.

Both lobes are the exact same at .050 but the .904 lobe has less seat to seat timing (better idle and more idle vacuum) and by .200 lift the .904 lobe has far more area under the curve.

When you are laying out an engine build the .904 lobe allows you to do more without sacrificing the above mentioned things.

Exactly, the same as a better flowing, more efficient head allows for less cam for the same output..better torque curve.
It's important to point out not all "Mopar" lobes are the same, that's all. Some are no better than an excellent aggressive .842" design, and the most aggressive are going to require more than a standard valvetrain can handle by a mile, goals, expectations, budgets....