ok, I checked. You're not really stronger everywhere, but rather the two of you are about equally strong. However, your players committed 20 Fouls, which led to 27 points from FTs for you opponent, and your SF fouled out. That's largely a matter of luck, but checking whether you have very aggressive players could help.
Also, your starters played well above 40 minutes, which might work if they're equipped with high stamina, but usually doesn't pan out.