Well, after 200+ concerts in my lifetime, I know a good one from a bad one. And I don't agree with judging a show by a youtube clip due to the unbelievably horrendous sound quality recorded with people's phones. That is precisely why Steven Wilson prohibits filming any of his shows, whether it be PT or Blackfield. He has said that he doesn't want people judging their music by very low quality youtube clips. Even though people don't care and do it anyway.

I've seen Queensryche 5 times live and rate them as follows:
Portland 1991 Empire tour - Off the charts good. On a scale of 1-10 I'd give it a 1000.
Vancouver, WA 2007 Hits and Rarities tour - Ok show, not very into it. Geoff sounded just ok, didn't take any chances other than a couple high notes just show he can.
Portland 2009 AS tour - Very, very good show. They were on fire that night and Geoff sounded very good, not Empire tour good. That would be impossible. But he pulled it off on THOTF during the encore, again not 80s quality, but he hit the notes and they were in key. A very good night at the start of the tour.
Eugene, OR 2009 AS tour - Just an ok show, not very into it, last stop on the tour, they were clearly done with it. Geoff's voice was thrashed by that time and he struggled to get through it. Pretty weak and not worth the road trip, other than we got to meet them at an Italian restaurant before the show, which was a surprise.
Seattle 2009 Empire Orchestra - After several days off from the end of the tour, Very good show. Geoff sounded good, but not as good as the Portland show. But he sang his ass off and it was a million times better than the Eugene show just a couple weeks before.
So as you guys can see, I'm not an idiot. I know what I hear and I know Geoff isn't consistent. But I've also noticed that he does better when he's not trying to sing those ridiculous vocal ranges every single night. His voice needs rest to sound up to par, but it's not ruined...yet. I think his age should be taken into consideration as well. I mean, it's not like Bruce Dickinson or Rob Halford are singing like they did at their peak either.