Like I said before I can understand your disappointment and i can agree with you in most cases...I'm sure that Buzzer control doesn't take into account all the parameters of the BB game engine...so it's not going to give you the precise game analysis that you may want. But it does give you a good general starting point. And actually it doesn't really predict the result, it takes Team ratings and Match up ratings from the BB site and averages these figures.
I had a similar game two seasons ago, against a team much weaker than mine and Chanos, were I should have should have won by 18 pts and game ratings were 5.6 to 4.9... and yet I lost by 1pt in two overtimes. And that game also put me in financial problems...so, the season is long and you will recover and do well I'm sure.