Also, many people are complaining about the ILS and some have a legitimate problem with it. It is also likely, from some of the posts in this thread, that the ILS is being unjustly blamed for a failure. I do not doubt that claim at all. We also know that S&W won't release its problem numbers to us. It won't release its test data either. What we do know is people are complaining about problems. I have not heard about the ILS on Ruger revolvers engaging (perhaps they have). Why don't we hear about Ruger ILS problems, but we do hear about S&W ILS problems?
Few, if any gun companies are willing to release problem numbers, but even if they did I have no doubt that the bashers would accuse them of dishonesty so it doesn't really matter much. As for the Ruger lock, it's not been implemented as long as the S&W version has and Ruger does not have the lock in all of their revolvers (the only DA revolver they make that currently has it is the LCR). Simply put, Ruger has far fewer lock-equipped revolvers in circulation than S&W does so the number of problems will naturally be lower.
Likewise, the Ruger lock simply hasn't gotten the publicity that the S&W lock has, good or bad, and many Ruger owners are unaware that their gun is even equipped with a lock since its not plainly visible. Out of sight, out of mind if you will.
Finally, most owners of Ruger DA revolvers simply don't seem to be the purists, and thus resistant and resentful of change, that many S&W owners are.