Yeah, it's all a bit confusing. I read a few of those links and realized that the whole issue is kind of murky...
At the first one (
Cornell's site) I saw someone post
"And I must say: Chris Cornell, in the position of being the world's greatest singer, can not possibly be the one who sings on "Monstereo"..
I read an article in an UK mag called Total Guitar which contained: Tom Morello, John 5, Zakk Wylde, and Steve Vai. In this article Morello talks about the collaboration between Chris and the former RATM.. he said that when he, Morello that is, came up with a riff that sounded like a Soundgarden-riff or something like that Chris just said no. He wanted to do something diffrent than before... SO there it is: The Ugly Truth.."
Now what that exactly means, I'm not sure...
I tried to surf Collins' site some more, but his forum was down earlier this morning (I got the above from the cached page).