Everyone that has been mentioned in this thread is being underrated.
Gladiator, being a mid tier, thats funny. Almost all of the people listed in the high herald list doesnt have the feats gladiator has.
Moving planet size meteors. Flying out of a solar system destroying blast without even a scratch on him. On panel statements of him blitzing at light speed. On panel statements of him flying 100 times the speed of light. Planet destroying strength. At least 5 statement of him being physically the most powerful being in the universe (dont agree with this but it being said 5 times, sh**). Being stated 3 times of having near unlimited strength and the list goes on.
Black bolt being listed as a mid tier, where did this come from? Black bolt matter manipulating powers alone puts him in the high herald list. Thats not including what he is physically. Now black bolt it powerful and I agree, he can give almost anyone a fight physically, but him overpowering gladiator, a being with almost limitless potential, that should never happen. I'm not going to underestimate bb though, I agree, he would give anyone on the high herald list a run for there money physically, some I could see him taking but I just cant see him beating glads though.
Havok; you all are taking away from on panel statements. It basically said that havok was a walking star. Thats powerful if you ask me and that gives him more rights to be in the high herald list with that statement alone. Silver surfer tried to absorb a star and almost exploded, havok had no problem doing this and handled all of that energy just fine. That was a good showing for both Vulcan (due to him fighting someone with that much energy) and Havok.
Vulcan; I'm not even going to go here, I'm just going to say this, read up on what marvel comics thinks of Vulcan and you'll see why he survived all that he did during that series.