“They all spent so much time complaining about what had happened that lost focus on more important things. I, however, was more concerned to find a way to get out of that meeting.”
Well, as you could notice, the accent might have changed a little bit, but both ways are correct, afterall the language is the same. So, we have to learn how to comunicate in the English language in the way native speakers do it.
Getting too worried about which accent we should have, can delay our progress.
In my opnion, here in Brazil we are way more exposed to the American accent, but still, schools insist on saying that the so called 'british accent' is the one to be learned. One of my friends studies in one of these kind of schools, and she told me that her teacher does not speak with the british accent all the students hear from the Cd that comes along with their english book. Why not? Simply because she can't. Many brazilian teachers can't.
I think it is really important to train our ears, and expose it to different accents. Then we won't have so much difficulties when talking to people from different countries.
British or American accent? I would go for: Both! And use the one you feel more comfortable when you speak.
I personally ended up getting my personal accent I guess, which sometimes I call amerish accent.
And in conclusion, yes the “Brazilian accent” does exist!