Maybe it is to early but the problem is that you need other teams to play to get better. When my team joined GGL we got pounded into the ground pretty good at first. We had only played against pubs and we always won. We thought we were much better than we really were. The best thing about GGL for us was that we met other teams and started having regular matches outside of the tournaments. Now we routinely beat the teams that were mopping the floor with us before.

Dont give up on it. You will meet some cool people and hopefully you will have a few teams to play against in the future. That will give you the experience you need to improve. Your team is probably very good at the game, it just takes different tactics when you play against other actual teams. If you were on the 360 my team would be more than happy to play against you guys. Like I said, dont give up and find some other teams to practice with. Soon you will have the different tactics you need and you will be winning games. Good luck!