I gotta agree with Blood and Young...
There are a couple songs where it works, but I really feel like they were just kind of like "Ok, Tom's gonna do a cool intro, then Tim's gonna come in with the bass line, Chris is gonna sing the first verse, after the second verse (around 2:20 to 2:40), Tom's gonna bust out a solo and in the meantime Brad's gonna try not to screw up the song with his mediocre drumming."
With Rage, I felt like Zach was so incendiary and full of energy that it pushed Tom (and the rest of the band) to keep up. I think Tom had a little bit of an ego and wanted to be the star of the band, but Zach was so vocal and so out there (and such a monster on stage), that Tom had to play his ass off to keep up. With Audioslave, they're kind of just like, "fuck it, we can just do this to sell."
Also, what seperated Rage from anything else was just that raw intensity that just grabbed you and wouldn't let you go. The end of songs like Freedom, Take the Power Back, Wake Up, Guerilla Radio and Bullet in the Head where Zach is screaming his ass off and Tom is just pounding on the guitar. Audioslave just can't imitate it, although the end of Gasoline is pretty close.