I've read the majority of this thread and most of the replies state that most people on average didn't realize what it was that Marvel was portraying when writing Sentry as a character. Void is Sentry, just like Sentry is Void, they are one guy.
Why can't anyone come to this simple realization? One Dumb Go, and a very few others get it, but the whole idea seems to have been lost on everyone else. When we look at the Hulk and Bruce Banner, we know that it is the same character. It's as simple as knowing that Dr. Calvin Zabo is Mr. Hyde.
The difference in the characters mentioned is that Bob has always had the power to project mental images, making it possible to see the Void personality in the same instance that we were able to see Sentry. Bob had a fragmented psyche from jump street, he was bipolar, which is why Norman Osborn was able to reach him on levels that no other character could.
Like I said Bob has always had the power to project mental images making them solid constructs, kind of like a Green Lantern projects solid light objects. The only thing here is that Bob's projections were far more powerful than a GL's.
Norman did not possess the power that Bob possessed, but he knew that Bob was also only subconsciously tapping into the huge amount of power that he possessed. So basically when we saw Sentry fighting at the levels that he was fighting on, we only saw a fraction of the power that he could unleash.
Black Adam, The Hulk, Superman, Thor, Molecule Man, Silver Surfer.... all of these guys were not, and are not on Bob's level. Placing Bob in a tier on these forums or any other was basically premature. Bob was likely an abstract level being, and was as powerful as his fractured mind allowed him to be.
Being able to contain the power of a CCU was just a hint of the power that he possessed. Black Adam would have little chance against Bob, and would likely flee once he realized exactly what he was up against.
This is of course if Bob allowed him to flee.