Browning Superposed guns were and are "good guns for the money" and their pointing characteristic tend to be more "forgiving" than those of "low receiver" O/Us.
There are problems, however. These guns tend to wear and shoot loose comparatively quickly and they tend to be heavy, due in large part to the fact that their robustness is based less on their design than on the mass and the quality of their raw materials. Don Zutz's excellent analyses deal with these flaws.
Superposed guns also have deserved reputations as being "kickers". Part of this problem may have been due to the guns' "high" receiver and another part very likely has to do with the guns' relatively tight bores and short, steep forcing cones. I have seen trapshooters come off the line with bruised shoulders and bleeding faces after shooting these guns. (Of course, it may not have helped that these same shooters very often "hotrodded" their loads!")
