Heres a video of a 1v1 with the 7thRF, you can see they didn't just yolo charge every round. They even lost some melee rounds when they were up people. In the end it came down to Montys leading abilities to get his men in a position to win the round
Also if you look at the scoreboard you have MajorDan, Ghosty, Allday Onizuka, Vladmirsky, Toast all people Positive in the socreboard and doing well in melee, none of them exept allday and onizuka were in the 12th and even those two were not active at all and only were there in the first month really.