Qualitatively, those three letters don't mean anything, at least not to me they don't. There are plenty of Champions not worthy of the title, despite their achieving the numerical criteria to be a "Champion". Maybe that's enough for you. Any old dog can rack up three wins if their opponents are junk, that doesn't make them worthy of the title Champion, yet technically they might hold it. Similarly, though a dog may be a POR or ROM, it doesn't speak to the quality of their progeny's wins. I'm not sure if you've actually seen anything off Jerry, but I have. Ch Jerry himself is a decent dog based on the show I've seen, but the dogs I've seen off him I didn't like at all -- including Ch Tomy and Ch Jerrycona. Leaving the mystery of how Tomy managed to win three aside, in his 4th he was picked before he quit. In Jerrycona's second, his opponent jumped the wall rank in short order -- this was a 1xW! (You can get an idea of the quality of the competition that dog faced to become a winner.) Ch Spike is arguably the best of Jerry if accounts are accurate. I've seen maybe half a dozen more dogs off Jerry, but at risk of being called a hater, I'll just leave it at that. Regards.