Even when the fight starts, Tauro's opponent lets him go and then gets back to a certain distance, showing that acknowledges Tauro's strength. Despite Tauro losing in the end, he was able to do quite a bit of damage. Sadly, when the results were posted, Tauro was ostracized, even by the guy who ultimately wanted him in the order in the first place.
He went back to regular routine of selling potions, feeding his bug buddies and when his fellow pilot brought him into another brothel, that's when they encounter the two female pilot candidates. Tauro basically fucks the ponytailed one and finds out that she was brainwashed by the male elf prostitute she liked... at least in her head.
Later on, Tauro is introduced to the head of the Merchant Guild and was shown their own exclusive Knight unit. He wanted Tauro to pilot it after seeing his fighting style which values ranged combat and staying OUT of trouble, as opposed to the "honorable" shit of going melee and possibly wrecking the unit, which has actually happened a lot and it costs a lot to repair the one Knight unit they have.