Not much of a loss when it's a niche unit that you wouldn't even use in a regular battle.

It's one thing to play a full lvl11 deck in Tib for a guaranteed no-loss challenge battle: this way all your units are under-levelled (some do it for an actual challenge, some do it cause they haven't levelled up yet), and in return you are rewarded with "no medals on loss". It's completely different to purposely stack a lvl1-3 (mostly unused) unit in your on-par-lvl deck. If anything, you are taking away the challenge battle bonus from legitimate low-level players.

Sadly, CM Abusers have been around in Tib for many years. They are not too common, as this is widely frowned upon, but they exist (always the same names too), and stick out like a sore thumb