[{quoted}](name=venomous frost,realm=EUW,application-id=3ErqAdtq,discussion-id=ohz6be06,comment-id=0000000000000001,timestamp=2017-01-12T15:04:58.145+0000)
Frozen mallet is objectively better on melees stat wise
But OP was probably referring to being better in game play, and as of right now, mallet is more used to kite melee champs as ranged, than melees keeping up with ranged.
I think you need items to catch up with the adc to start with anyway. FM + BC + Boots, + an Attack speed item. For the most part, however, fighters chase assassins not ADC. This is more of a rock paper scissors point you brought up.
Also, if you are not building defensive items on a melee, we have other issues. (Unless you are an assassin, but even then you need some type of survivability.)