1. Cyborg’s arc was completely different given his mother wasn’t in the theatrical and his Dad lives in the theatrical cut. Difference. He’s coming to terms with the idea that his powers are a gift, not a curse and he isn’t alone in this world. He was basically just a robot dude in the theatrical film because Whedon/Johns/Berg didn’t want an ‘angry black man at the centre of a franchise film’.
2. Batman’s arc is completely different given he’s not trying to commit suicide or whatever was implied in the theatrical. He’s just trying to be the best leader he can for the team. He also isn’t moping over Superman as much as he is in the theatrical cut of the film.
3. Aquaman’s arc lined up with his solo movie versus whatever was in the theatrical cut, which was more to do with ‘this is a waste of time and I don’t want to die’. Here he’s understanding his place in the world.
4. Wonder Woman isn’t moping about Steve Trevor but instead has a yearning to return home and is co-leading the team with Batman.
5. Flash is probably the only one who is basically the same, but is less Shaggy from Scooby Doo and more just new to being a hero.
So yeah. Not the same. It’s okay if you didn’t enjoy the film. There’s no need to try and take away the enjoyment of others or try and ‘factually’ nail a film when it’s not valid. Peace.