My Experience from Yesterday:
We were group of 4:
QUE 1 - all Ok we get in to a match.
QUE 2 - 3 of my friends got in to BGs and I got into ANOTHER MAP (ANOTHER BG) and was forced to play 1v4v4 for the whole game while they were forced to play 3v4v4.
QUE 3 - 3 of us got in to the same BG, 1 of our friends didn't get the QUE pop at all.