Playing up consistently in GAC against larger rosters means you are doing something right and are probably more skilled than the owners of the larger rosters. In my own experience, in GAC over the past several years I have rarely, if ever, faced a roster smaller than mine and i am usually outgunned in the GL department. I currently sit in Aurodium 3 and have been had as high as kyber 2. On the rare occasion i have faced a smaller roster it is usually one of the tougher match ups i will face. My only advice is to play your match ups through to the end, don't quit and always be improving your roster.