Pretty sure playing them together means that the other 2 d pairs will have zilcho defense. Burns, Orlov, and Ghost are all subpar on defense and Walker is average at best (for a 3rd liner).
The problem is less our defense and more our goalies and offense. Our offense will have 1-2 games where they score 5+ goals followed by 1-2 games where they may score 1 goal. Not sure what our record is in games we score 3+ goals, but it has to be pretty damn good.
So pretty much, the magic number is 3 - score 3 goals, and we usually win.