Here are a few ways to convey a similar sentiment:
Informal:
* Salut, je suis plus cool que... (Hi, I'm cooler than...) - This is a very direct translation, but it might sound a bit arrogant.
* Coucou, je suis plus branché(e) que... (Hey, I'm more trendy than...) - This is a more casual way of saying it.
* Salut, j'ai plus de style que... (Hi, I have more style than...) - This is another option that is a bit more indirect.
Formal:
* Bonjour, je suis plus détendu(e) que... (Good morning, I'm more relaxed than...) - This is a more formal way of saying it.
* Bonjour, j'ai un style plus personnel que... (Good morning, I have a more personal style than...) - This is a more polite way of saying it.
Remember: The best way to say this depends on the context and the relationship between you and the person you are talking to.
It's important to note that bragging about being cooler than someone else is generally considered rude in any language. It's better to focus on your own strengths and accomplishments rather than comparing yourself to others.