The OP seems to be asking about brands,
With bullets, there are differences between Winchester Ranger T, Remington Golden Sabre and Federal Hydra Shok. With shot - it's not the same like with bullets. These are just round balls of metal. And as has been stated before - the same brand can act differently in three different shotguns.
There may be some differences with plated versus non-plated and a flight-control cup, lack thereof or even a spreader wad. Wolf shotgun ammo has been shown to open up quite a bit... at HD ranges it might be a good thing.
If you are going to shoot someone at 10 feet - you have to decide if it's better to make a 1" hole or twelve or sixteen .3" holes spread across a 3" diameter.
Just to throw something else in the mix - you get different results if you fire shot through a rifled shotgun barrel.
Normally a shot pattern for normal shells (not FliteControl type cups) opens up 1" per yard from the muzzle. So for typical HD distance - yes you're going to have to aim because you're going to be creating 3"-4" holes.
However... with a rifled barrel and a load like Wolf - which is known for opening up pretty early you can get some pretty large shot patterns.
I calculated that the Wolf through rifled barrel spreads 3.6 times the "normal" rate.
Normal shot through a smoothbore would give roughly a 5" pattern at 5 yards. The Wolf through rifled opens up to 18"
So firing Wolf at 6 feet should create a 7.2" pattern, 10.8" pattern at 9 feet.
That's pretty darn close to the so called myth that you don't have to aim.
Granted the pattern takes on a ring shape...
Buckshot through a rifled barrel:
http://www.theboxotruth.com/docs/bot43.htm