Ricochet does 100 potency + 200 to all targets divided among all target in an area, including the original enemy. So, if there's only one enemy, he takes the full 300 potency attack.
so thats how it work?, i always though it only deal 100 potency if there is only 1 enemy since the rest 200 is divided to other enemy (it didnt say anything about 300 total if there is only 1 target) >_>

thanks for the tip guys, that help a lot =D