The rankings only take into account the last 10 games a team plays. This is why the top ranked MHR teams play a bunch of top tier invite only tournaments throughout the year. Losing big at these tournaments is infinitely better than not going at all because of the strength of schedule factor. Top teams can't go too long without playing a tournament- their ranking cant survive on just regular season games. Look at a calendar- it's rare for them to go 10 games without a tournament.