The problem is the "evaluation" isn't just statistics. I think they were looking at how long each team was competititve. Not sure if you saw any other team besides your own child's, but my son wanted to watch his best friend play. Their team was leading the entire game until the end when an eronious penalty was called to put a team down by 2 kids with minutes to go. The opponent scores 1 to tie. Now it's, " let's move as slow as we can so we can absorb time off the running clock". Still down by 1 player, few seconds to go now and a Hail Mary to win the game. Didn't matter how many goals were scored, the game could have gone totally different if the phantom call (which everyone watching on both sides, couldn't figure out).
That's the problem with stats with this particular weekend. They are almost meaningless. Clubs that blown away by opponents, sure... But clubs that were always competitive and the outcome could have gone either way, that is what needs to be taken in consideration.
On another note, if Ducks 1 best the Saints 1 last week according to earlier posts and beat Ducks 2, wouldn't they rate higher on the scale?