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

Yes

The word "maravilhoso" is identical in meaning, spelling, and grammar in both Brazilian and Continental Portuguese. The only difference is pronunciation. In Brazilian Portuguese, the vowels are generally more open and the rhythm is more "syllable-timed" and melodic. In Continental Portuguese, unstressed vowels are often more closed or even reduced/swallowed, and the rhythm is more "stress-timed," giving the word a more clipped or shortened sound.

Brazilian Portuguese

1. Esse bolo está maravilhoso! (This cake is wonderful!)
2. Tivemos um dia maravilhoso na praia. (We had a wonderful day at the beach.)
3. O show de ontem foi simplesmente maravilhoso. (Yesterday's concert was simply wonderful.)
4. Que vista maravilhosa! (What a wonderful view!)
5. Que presente maravilhoso você me deu! (What a wonderful gift you gave me!)

Continental Portuguese

1. Este bolo está espetacular! (This cake is spectacular!)
2. Tivemos um dia fantástico na praia. (We had a fantastic day at the beach.)
3. O concerto de ontem foi brutal. (Yesterday's concert was amazing.)
4. Que vista magnífica! (What a magnificent view!)
5. Que presente fantástico me deste! (What a fantastic gift you gave me!)