forged is stronger, but only along one axis. forging aligns the crystal structure of steel but only in one direction. In the other axis it will be weaker. Cast, as ruger does it, will be slightly weaker in the axis in question, but stronger in the other two. When you take into account that ruger uses more metal in their frames (ie they build tanks) they are a good bit stronger but heavier. If you want to beat a gun with extra heavy loads all the time buy a ruger. If you shoot standard with some magnum buy a smith for a lighter handier pistol. Smith's will wear out, and i've had at least one repaired for a stretched frame. Rugers won't buy they are boat anchors.
I'd be happy with either, but if i had to wear it on my belt all day long it would be a smith. That and i own 1 ruger, 3 colt, and over a dozen smith revolvers.....and to take to the range i take a smith