Well I originally came here to rub these games in your faces, but I decided not to be a dick and instead ill put out some ideas that can potentially progress this app.
First off, their pick (which i'm assuming was just a test because they picked the shit side.)
To what I've seen BG do, was a somewhat steady push which was good, but the fragging was weak therefore not too many flags were taken from your position. Most improvement there I believe would be the fragging.
Second map, our pick was d3 due to lack of care or wanting for anything else.
To what I saw, it was a mess for you on the long side. Rarely did you push, and when you did you went a way were it was easy to hit you; minus the grenade-box area. When you got to our base your approach was generally bad although you did at first cover yourself with a grenade. All I can say there is angle abuse and push more.
All in all I would suggest working on angles/movement as well as fragging. Maybe my opinion means something, maybe it doesn't. I posted the games anyway.