Eh, firstly, no one other than them actually knows what's going on there and any speculation is nothing more than fanfic in my opinion. Secondly, give the guys some credit. No one's forcing them to stay in the band, they're successful and if they wanted to they could leave the band and concentrate in their side projects.
If you want to know what Chester thinks, check out the latest Kerrang.
His own words sound a lot like he had more say about the direction of this album than Mike did.
Don't believe they hype, is all I can offer you.
Linkin Park are not sheepish followers of Mike Shinoda, despite outward appearances.
I think Mike certainly is the leader of the group, he is for sure a very talented lyricist and musician. However, I do feel that the other members of the group contribute their fair share and I don't think any of them are afraid to air their thoughts and ideas. I personally feel that Chester is more than happy with the way his vocals have been recorded on ATS. Again, I am sure that if he was not happy, he would have put his point across. He is a strong charactered person, not afraid to put forward constructive ideas.