Same here, I mean, I dont have enough knowledge of PJ music, even though I do like their songs I know. And about Stapp X Vedder, yes they have some vocal similarities. Not equal, however.Both have good voices and I think that you are right in that.Like you, I prefer Stapp's voice--and of course, in my opinion he's better singer than Vedder. His voice is real smoother compared to Eddie's voice that seems am little "roughy". But I have to admit that the instant that I listened to Creed on radio for the first time I thought it was Pearl Jam--and after this I was still confused about who 's who...
Also about Creed X PJ --I think its easy to realize waht was the most "consistent" band: one is still on the road and the other is dead, guy.
Well, this is my opinion about the two guys, by the way, the last two times this topic came out --I had some "problems" here...lol
Not sure about the third one...