Is the word confusa the same in Brazilian and European Portuguese?

Yes

The word "confusa" is identical in meaning, spelling, and grammatical function in both Brazilian and Continental Portuguese. The only difference is pronunciation. In Brazilian Portuguese, vowels are generally more open and clearly articulated. In Continental Portuguese, unstressed vowels are often "reduced" or closed, making the word sound slightly more clipped or muffled to a Brazilian ear.

Brazilian Portuguese Examples

1. Eu estou muito confusa com esse celular novo. (I am very confused with this new cell phone.)
2. A explicação dele foi super confusa. (His explanation was super confusing.)
3. Ela ficou confusa quando o ônibus não passou. (She became confused when the bus didn't show up.)
4. A situação no trabalho está meio confusa hoje. (The situation at work is a bit confusing today.)
5. Fiquei confusa com o que você me disse. (I became confused by what you told me.)

Continental Portuguese Examples

1. Estou muito confusa com este telemóvel novo. (I am very confused with this new mobile phone.)
2. A explicação dele foi bastante confusa. (His explanation was quite confusing.)
3. Ela ficou confusa quando o autocarro não passou. (She became confused when the bus didn't show up.)
4. A situação no trabalho está um pouco confusa hoje. (The situation at work is a little confusing today.)
5. Fiquei confusa com o que me disseste. (I became confused by what you told me.)