^^^Here is your answer^^^

There is quite a bit of difference in the dimensions and carrying qualities of J, K, L, and N-frame revolvers, and they serve a broad range of individual requirements. For the J-frames that market niche seems to be concealment, light weight, and ease of use. For the N-frames the market niche seems to be magnum calibers, maximum effectiveness under a wide range of circumstances. For the medium (K and L frames) the market niche seems to be allowing the user to select one handgun that fills many needs; i.e.: not so large or heavy that it is difficult to carry, but still capable of delivering serious firepower and accuracy in the hands of an accomplished shooter.

Apples and oranges do not compare very well. There is no such thing as the perfect revolver for every user or application. All we can do is evaluate our needs as best we can and equip ourselves accordingly.