I can't judge his predecessor, as we avoided those two weeks, but Rodgers was a very good host. I read an interview where he was close to keeping 'Alex time' (very few edits). He had a good voice, had a good wit, and was very relaxed. Good but not great during the interviews, but that's not his forte.
I wasn't keen at all about Anderson Cooper when I heard the news. It was only his first night, and it takes a few as a viewer to get used to new voices, but he was quite good. And interviewing is a natural for him.