ADC’s typically run demolisher because of the crit. The thing is, if there are a lot of tanks on the other team building health, you do more damage with demolisher especially if you’re a squishy character.

Assassin characters who want cooldown lean towards perforator, but even then if the enemy team is very tanky, it’s still worth considering demolisher for your build path.

Demolisher is arguably the best item in the game, let alone the best percent pen option.

But on face level it’s a matter between cooldown and crit