Given a case where both products are new production and both firms have something relatively similar, I like what Ruger has to offer.
However, when reviewing the last half dozen or so revolvers I bought, Ruger never once had a directly competing product. Not once.
This doesn't matter if you're looking for a 686/GP-100 or a heavy "J"/SP-101.
If, on the other hand, you're looking at 8 round .357s, alloy framed .45 ACPs, full sized double action .22RFs, a long-action .32-20 or any other non-plain-vanilla offering you may find yourself with no Ruger to use as a comparison.
The only real comparison to an alloy "J" right now is as scarce as Gold Labels.
I've already got a half-dozen mid-frame DA 6 round .357s. Adding a GP-100 to that pile would be like taking coals to Newcastle. But, an 8 round snubby alloy framed .357 - I don't have one of those.
I view Ruger as nice stuff - but not near enough of it. And, for the time being, nothing that I'm interested in.