Well this was a marginal win for the CTR but your party had a bigger swing compared to the last election. But either way, not a bad first election for a long time. CTR had an even worse loss than you did as CTR only had a 25% swing, yet your party had a 45% swing (if I apply a two party preference with Pepe party preferencing your party).
Two Party Preference.
CTR: 11/20 (55%). (+30%).
Nerd: 9/20 (45%). (+45%).