Its because as I said before, he's going about it all wrong.
It's not a suttle thing, its over the top man love for the Miz, its being smug and arrongant reading quotes from the GM, and like Edge said being a total tool.
He's just trying way to hard to sell himself as a bad guy and it just doesnt work, he's like te nerd at school who's going to call out the school bully and talk a tough game knowing he's going to get killed it just doesnt work.
What it needs to be is this:
Michael Cole: Face commentary
Jerry "The King" Lawler: Doing what he's been doing nothing needs to change there
CM Punk: Heel Commentary: does a better job and is more belivable