Power advantage between Ford 351, Mopar 340 and Chevy 350??

In the early seventies we had a XY GTHO Falcon that had 4V heads, solid cam, 780 holley carb and headers with a 3.55 diff ratio and it only ran 14.8 sec qtrs . One guy had a GT and it would run mid thirteens and was a match fo,r my charger so I asked him why was his fast when all the others were slow? He said the first thing that I did was remove those bucket port 4v heads and put a set of 2v closed chamber heads on and it then became a weapon! Yes those 4v heads will make great power at the top of the rev range but lack air speed down low,so are very inefficent on a street car.