In my honest opinion, and I'm trying not to be too harsh, but the show sucks. Bad. I liked Sam a lot on GMA, but he's just too much on TWC. He always seems to interrupt the others when they're talking, and goes off topic ALL the time.
There is no chemistry between the four, which makes it very hard to watch (especially for a morning show). The morning's were definitely better with just Mike & Maria, and clearly the ratings tell that story. It'll be interesting to see what happens with the show in the future, especially if ratings continue to decline.