It's clear that Simons adds a lot to the finished picture, but that doesn't diminish Sal's crucial contribution: it is his clean, clear layouts that actually tell the story.

That Buscema/Simons page shows how to properly ink breakdown pencils. A good inker takes what is there and adds to it, filling in the blanks. Providing depth, texture and their own touch. Too much of both Buscema brothers breakdowns had inkers taking the easier route in simply doing flat inks, simply outlining what is on the page. Never filling in details or adding background which makes it all look empty or rushed.

In my opinion it wasn't the penciling that is at fault. They did exactly what their Publishers asked for in providing a loose "guideline" that others could follow and use to build upon. The "hack" work is the ink job that was too shallow or done so quickly and following such a loose layout exactly with little being added to it.