I was playing Iron Banner the other day and as usual I check the roster to see if there's a team of 6, and sure enough, there was a savage team of pub stompers out in force.
*Sigh* I think to myself, "Pub stomp on Shores of Time. My team doesn't look too formidable. This won't be fun."
HOOO BOY I WAS WRONG.
They were AWFUL. I single-handedly wiped their entire fireteam multiple times, and the poor bastards couldn't hold anything but A. Even after they all switched to Thorn / Mida / TLW they couldn't pull their score back.(Because my team was smart enough not to triple-cap.)
TL;DR - Pub stompers in Iron Banner get stomped back.