Overall the nerf allowed Jotaro to become a better character, who wasn't afraid to show his emotions. So it is safe to say that Jotaro getting nerfed by Araki was pivotal in the success of Stone Ocean.
In stardust crusaders Jotaro notes to himself that star platinum is getting more agressive and stronger every day so when the mission is fulfilled star platinum cools down and gets weaker like how most stands have secondary and tertiary effects.
Araki is an artist. Any artist must grow over time. Their artstyle will slowly change for the better. The animators over at David Productions respected Araki's style change and change their animation style from parts to parts to look more like Araki's manga of the respective part.
Just a stylistic change, nothing else. Though the characters losing their muscle mass may be due to them growing up, as it has been 11 years from part 3 to part 4. The characters introduced from then on simply must not work out.
Yes Star Plat's strength is not as ridiculous as in part 3. Jotaro couldn't bounce around buildings anymore. So yes, Jotaro is indeed nerfed in terms of raw power.
Overall the nerf allowed Jotaro to become a better character, who wasn't afraid to show his emotions. So it is safe to say that Jotaro getting nerfed by Araki was pivotal in the success of Stone Ocean.
A lot of his combos lead to hard knockdowns where Jotaro's true potential lies, as he has some of the best okizeme options in the game. His only major weakness is the fact he has no long-range attacks.
1 Jotaro Kujo's Group Vs DIO
The long-awaited final battle between Jotaro's group and the vampire overlord DIO has proven to be the toughest, most suspenseful battle in the entire JoJo anime thus far. DIO wielded the incredible power of The World, a melee Stand that could freeze time itself to create one-sided battles.
Jonathan Joestar is probably the weakest JoJo in the series. He doesn't have a stand, and his powers are limited to the utilization of Hamon. He doesn't have a stand that is not uncommon since the concept of stands was introduced only in Stardust Crusaders, the third part of JoJo's Bizarre Adventures.
The answer, then, seems to be that his hat is ripped at the back -- part of his stereotypical Japanese delinquent aesthetic -- and its shape and color just happen to blend seamlessly with his hair, creating the illusion that they are one and the same.
Jolyne's hatred for her father reached such a height that she even changed how her last name was spelled. This is why Jolyne spells Kujo as Cujoh in order to avoid anyone making a connection between the two.
So, all in all, Star Platinum has the ability to harm Goku up to the Cell Games, where his Time Stop (Which Goku can't escape at this point in time) would make Star Platinum more than equal. The Power Level for Star Platinum is 2,500,947,602.
Super Strength: Star Platinum possesses immense strength, being able to throw a Jeep carrying four men and a girl out of the path of an 18-wheeler with one hand, later pulling the same Jeep out of a canyon with only a car as a counter-weight, and destroy large artificial diamonds within seconds.
As a result of its powers, all of the temporal anomalies occurring throughout the story disappeared after the death of Heaven Ascension DIO. The world reverted back to normal and Jotaro lost Star Platinum Over Heaven.
Khnum is truly the weakest Stand in all of JoJo's Bizarre Adventure. Its ability is Transfiguration, allowing its user to take the appearance of another person.
1 Jotaro Kujo
Jotaro Kujo is undoubtedly the smartest character in Stone Ocean. He was able to discern the abilities of his opponents after just taking a look at them.
Wonder of U has a case of being the strongest Stand in the series. It is a sentient Stand that can function on its own. Wonder of U possesses a number of abilities that make it an extremely dangerous stand. It can create illusions of itself, which can confuse the target.
9 Crazy Diamond Is Potentially The Fastest Of The Punch Ghost Stands. While most of the humanoid Stands have equal power and speed, Crazy Diamond could be the fastest of them all.
Jonathan Joestar (Jojo's Bizarre Adventure)
He's a 195cm tall titan made out of almost all muscle. It would be his kindness that would make him stand out from future Joestars, though. He is a true gentleman and shows it throughout his part by showing kindness to enemies and allies alike.
R1 - Jotaro wins thanks to Star Platinum's superior speed and strength. Even if Whitesnake can keep up, Jotaro has the ability to stop time and just put Pucci down.
However, Jotaro is more powerful than Pucci on a physical level, giving him an advantage when both stands have no time powers. To sum everything up, even though Jotaro is physically stronger than Pucci, Pucci is simply too fast for Star Platinum.
That said, there is no denying the fact that DIO is just straight up stronger than Jotaro. Not only is The World one of the strongest Stands, but DIO is also a vampire with Jonathan Joestar's body. As a result, DIO has augmented abilities, a Stand, and some Hamon resistance.