streaks can swing vastly. you can get lucky and never get a worthy match and get your streak up 30+. happen to me for like two months at least. multiple times.
I posted an update of the streak average over the past month. There have been no vast swings, just a steady increase for allied streaks and a steady decrease in axis streaks. I agree with you, we should be seeing vast swings when we have a balanced game, but its been a month and you aren't seeing this. In fact, we are seeing the opposite.