According to Khanh Nuygen founder of BBKC (Bully Breed Kennel Club) and owner of Phoking Style National Grand Champion Rockomaina.
Stated on his social post: “WE HAD A CRAZY DISCUSSION ON WHAT AN EXTREME DOG IS ……AGAIN SO TO BE CLEAR ON WHAT AN EXTREME IS. ITS OVER DONE FEATURES ON THE DOG THAT MAKES IT AN EXTREME DOG NOT HEIGHT….IM GOING TO NAME THEM IN ORDER FROM THE MOST IMPORTANT TO THE LEAST IMPORTANT
1: MOBILITY
2: BIG HEAD 24 PLUS, BONE STRUCTURE
3 :OVERLOAD SHOULDER WITH MASS AND MUSCLE ON TOP OF THOSE SHOUDLERS
4: HUGE ARCH NECK
5: WIDTH CAN BE WIDER THAN HEIGHT OR EQUAL TO HEIGHT NOT NARROW
6:BARREL CHEST
7:BIG THICK REAR WITH OVERDONE INNER THIGH MUSCLE
8:MUSCLE DEFINITITON
9:HEIGHT
10: CONFIDENT TEMPERAMENT ( A SCARY ASS DOG TAKES AWAY FROM THE WOW FACTOR )”
Bashar Daoud CEO and founder of Muscletone Bullies, famous for his Extreme Breed of American Bullies. Stated on his Facebook page in Ocotober 2023: “I see people don’t understand what i explained yesterday. So once more, the original standard said the dog should be as wide as he is tall . 98% of dogs are more narrow than tall, so it’s already a fault according to the original standard of the breed, yet most judges over look it cause its been rewritten. Now as an extreme should be wider than tall and also carry more mass and bone. So, instead of posting your dog and calling him extreme, please first measure your dog properly . Now, he should also be as long as he is tall ! If you have a perfect box or an extreme dog, then show me his movement and topline . If you can’t land all of the above in to one dog . Then, continue to educate yourself on structure and understanding of motion and symmetry in the animal. Cause an extreme is very different than the normal american bully !”
Magoo 
Rocko
Image of Bullymon Astro Boy, Astro Boy ancestry includes Phoking Rocko and Muscletone Magoo in his pedigree. Shorter in status yet still possess all the extreme quality features of his ancestor’s bloodline.
Dave Wilson founder of ABKC (American Bully Kennel Registry)
State in his social post: “Extreme doesn’t mean Excessive, know the difference. The breed should have Extreme features but not be Excessive or Overdone.
Extreme:
“Very pronounced or excessive degree. highest degree : maximum”
Excessive:
“Implies an amount or degree too great to be reasonable or acceptable”
He says: “Extreme is impressive
Excessive is too much to where it’s not functional
That’s the difference.”
Dave continue on: “This breed should have extreme features as stated in the Standard. This breed has always been a wow factor breed and one that now has its own identity. We should be celebrating its achievements and striving to reach the point of excellence. There are many who have done this and many more to come…
Let’s get this on track to where the Majority of the breed is correct to the Standards.” “Extreme features mainly pertaining to head, bone, and muscle and that is what this breed should have, extreme features correct to the Standard.”
Is the American Bully breed in Australia heading towards the right direction?
————
Facebook user post “There is a physical difference in an extreme American bully and an American Bully. In my opinion majority American Bullys should carry extreme features that are balanced right . The main reason we have a confirmation show and judges. These are the features that distinguish our breed. But also to me the most important part of this breed is the extreme American bully, which are overly exaggerated physically. If you look at most top show dogs or dogs that have made impact within this breed, they come from overly exaggerated Extreme American BULLYS. Without the overly exaggerated extreme American Bully you don’t have the distinguished worldwide renowned breed we have known as the American Bully. That’s the reality!!”
Source credit: Facebook, PhokingStyleBullies, MuscletoneBully, Bullymon, ABKC