The myth that lighter fighters are more skilled is precisely that. A myth.
Even when Cody isn't fighting emotionally, like he did against Almeida/Cruz, he was still opting to throw a lot more wild, telegraphed hooks than straights, when any half decent boxing coach should teach you the opposite. Coupled with his below par chin, it was only inevitable that it caught up with him eventually. Gustafsson is a far more skilled boxer and fighter than Cody despite having never won a title, which shows that the elites of 205 (Jones, Cormier, Rumble) are better fighters than the Cruz, Garbrandt, Dillashaw love triangle.
Lineker would shatter his chin into 7 sparkling pieces.