He did a bad defense with 2-3, but your defense 1-3-1 was awfull. If you dont have a really good, good level of rebouding, never play this defense tactic. With the old GE it wasnt bad but with the new GE 1-3-1 defense is a bad tactic, just in a few excepcions you can use it.
You lost, first for the enthusiasm atitude and second because the other team had more posesions than you.
31-88/45-101 its just a big difference