Not tag-team style, but more of a 5-on-5, last man standing format?
Here is a video of just that sort of fight:
I watched several of these. They all pretty much follow the same pattern - one particular one-on-one match gets decided, then the winner helps out a buddy, which finishes that fight in a hurry, too. This continues until one team is totally victorious. Usually, the winning team does not lose even a single member.
It helps to have a size advantage - so long as skills are substantially similar.
In the videos I saw, none of the teams ever employed team tactics until the first one-on-one fight was decided. I wonder if that would change the outcome?