Not the Ruger "burger" ad, again...
Nothing quite like supporting an argument with "ad" copy. That is like saying that Miller Light tastes better than Bud Light because you saw it in a Miller commercial. It's a funny ad, but at the end of the day, it is a marketing piece that implies that only an unsophisticated, ignorant shooter would ever take a cast frame gun over a forged one. Since they have no technical ground to stand on for this ad, they approach the ad on an emotional level.
I wonder if it ever occured to anybody that Ruger made their frames thicker than Smith frames because they wanted to make them much stronger than Smiths, not because they wanted to be "equivalent". The lockwork on all Ruger DA revolvers is signifcantly stronger than anything you'll see on any comparable Smith, not equivalent. My guess is that it was never Ruger's intention to make their revolvers frames equivalent to Smiths, it was to make them much stronger. The solid, thick frames on the Rugers are stronger than the Smiths, in spite of what Smith and Wesson's Sales and Marketing department wants you to think.
If Rugers are not stronger than Smiths, then I guess all of those reloading manuals are wrong to list Ruger-only loads. I guess the marketing guys at Smith and Wesson know something that the rest of the shooting world isn't aware of.