We can compare anything, but why? They are so inherently different, that a comparison would be nothing more than an exercise in futility. If you want to know which you should purchase, I would suggest either both, or either one. There is no special reason why one would trump the other , other than capacity, and a slide safety. Recoil is manageable, and so is accuracy. The Shield is about the same weight as the revolver, easier to carry, only with a few more rounds, and better ammo selection.
I would recommend the shield of the two, "knowing nothing about your needs or wants".