Inverting Phrolova and Cantarella's weapons

So, while farming, I noticed something. Cantarella has a big hole in her CR, even by rolling CR on all echoes I barely reach 55%. On the other hand, my phrolova is massively overcapped on CR (90, AkA 110 with echo set effect) and needs CDMG. Would swapping their weapons be a good idea? Since phro's give CR and Cantarella's gives a huge amount of CDMG.

Sure, they can't fully use the passive effects of the other's weapon, but can still activate half or more of them.