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

Yes

The word "discutido" is identical in meaning, grammar, and spelling in both Brazilian and Continental Portuguese. The only difference is pronunciation. In Brazilian Portuguese, vowels—even unstressed ones—tend to be more "open" and clearly articulated. In Continental Portuguese, unstressed vowels are often "reduced" or shortened, meaning the "i" in "discutido" might sound much lighter or almost disappear, making the word sound more "clipped" to a Brazilian ear.

Brazilian Portuguese examples:

1. O tema foi muito discutido na reunião. (The topic was much discussed in the meeting.)
2. Esse assunto ainda não foi discutido. (This subject hasn't been discussed yet.)
3. O valor do contrato foi bastante discutido. (The contract value was heavily discussed.)
4. Um ponto polêmico que foi discutido ontem. (A controversial point that was discussed yesterday.)
5. O problema discutido na aula era difícil. (The problem discussed in class was difficult.)

Continental Portuguese examples:

1. O tema foi muito debatido na reunião. (The topic was much debated in the meeting.)
2. Esse assunto ainda não foi abordado. (This subject hasn't been addressed yet.)
3. O valor do contrato foi bastante analisado. (The contract value was heavily analyzed.)
4. Um ponto polémico que foi debatido ontem. (A controversial point that was debated yesterday.)
5. O problema abordado na aula era difícil. (The problem addressed in class was difficult.)