Guild Wars 2

I’m extremely confused about the way guild team ratings work.

I was playing with a team last week and we got to somewhere about 1.3k rating. After not playing for 11 days with that team, the rating decayed to around 700. We played won some matches yesterday, but only gained 10-20 rating per match we won and finished around 800 rating. Now I just checked today and we have 1369 rating.

Can someone explain this to me?

Also a decay of 600 points down to 700 rating after 11 days seems a bit ridiculous, I’m pretty sure that any new teams that have 1 win 1 loss will have over 1k rating. The system is basically saying that a new team with a 50% win rate is better that an old team that hasn’t played for 2 weeks but had a 70% win rate.