Irrespective of whether they win this map and/or series I think picking Ascent is a huge mistake.
They're an FA team going up against an org team who have been practicing for a long time now. So BRK have to punch up to G2 and imo a map like Ascent is not the way to do it. The meta on this map is soooo stale everyone knows how to play it by now. There's no room left for creativity and there's no unexpected plays to be made here.
As an underdog team they should pick a map with more room for creative plays and gimmicks to catch G2 off guard.