My comments are in line with absurdity of the "Argument". Meaning that opinions vary from one person to the next on just about everything, Small block vs. Big Block, Mopar vs Chevy vs. Ford, cars vs. boats etc...but as the original posted said STOCK HEAD Hemi vs. STOCK HEAD BB would not be worth the effort unless it was 500". That would be incorrect and proven so time and time again, just look back to the early days of pro-stock for examples.
Now as for where this post has turned to, once you (as others have said prior to me) go to aftermarket "race" heads all bets are off. When it comes to MAX performance ($$ is not an issue) they become more equally paired. but the Hemi still cost a little more...that's done to keep out the riff-raff
As for the Hemi in stock configuration compared to the Cammer or Boss...History has proven again the superior motor all things considered.