They say that mostly because she is cold and the banter on abc7 is so light and formal that it never really gets loose. You do get loose with Ron Magers, he can banter and joke and he and Cheryl work relatively well together. That 6pm show with Alan and Kathy is good, but both of them are very stiff and dry so it's awkward in itself.
I always cringe when Chuck Goudie says something that merits a transitional discussion and one of them says "ok chuck thanks!" And then off they go to the next thing. I remember when Detroit went bankrupt and I was watching Chucks report on it and the financial troubles in Illinois and he said "as a native Detroiter it pains me to see Detroit like this". Surely that merits some kind of response? Nah just "ok chuck thanks." That's missing an opening for more insight right there.
I'm not suggesting things get to the overly silly stuff that goes on at wxyz in Detroit (they were throwing wads of paper at each other after sports yesterday when the sports guy didn't pick MI or MSU for the final four, the female anchor is a MSU alum and jokingly didn't like it I guess. The lead anchor looked like he was under attack and was leaning way back with his arms up saying "We'll be right back" as he was ducking under the desk as they went to commercial). It was funny and at the same time really odd. Loose is a relative term I guess.
That would never fly at WLS but it could be a bit less stiff with more concept that these people like each other and aren't just forced to sit together, the eyewitness news format was nicknamed happy talk after all.