I have to say that there is so much more aspects to a great singing voice than how high or how many different notes a person can comfortably reach. The fact is Perry's voice did change quite a bit from Escape to Frontiers for one reason or another. Whether if it was intentional, a
blown out voice, or other reasons, that fact we cannot dispute.
The argument of who sounds better, Steve Perry or Arnel Pindea, is kind of a dumb argument to be making in the first place. I've seen most judge base solely on who was able to hit the highest note at a certain age (40+). That is really the argument that Pineda apologists are going to lean on. That and clarity of the voice. The thing is, there are so many other aspects of a singing voice to consider. That and the fact that clarity verses raspy is completely based on personal taste. I happen to like the raspier, huskier voice of the later Perry tracks. Some think of it as him having a burnt out voice. I think that's purely retarded, but so be it.
Anyways, when you consider all the aspects of a singing voice, the scale will always tip in favor of Steve Perry. Let's not kid ourselves with that fact folks. As far as comparing You Tube videos. Really? That's what you have to go with?

A true comparison is one that none of us will probably get to see any time soon (hope I'm wrong on this.) Comparing them both on stage live and in person. That is the only way you're going to truly know who the better singer is presently. Since none of us has heard the man sing in years, we have no leg to stand on. It's really futile to even be arguing about this.