Apples and oranges.
Maddow got a degree in public policy at Stanford, and is a Rhodes Scholar. She got a PhD in politics at Oxford.
Maddow has a good show, it's a benchmark for intelligent, in-depth analysis, top-quality, professional guests, and the ability to explain complex issues with a well constructed narrative. You can tell there is a lot of behind the scenes research specific to the show, lots of excerpts from published material and interviews makes it easier to follow. Especially right now, the most juicy and intriguing stories are all anti-Trump (Trum's defining feature is a he's a deplorable that loves making scandals for "ratings"). You will not find in-depth investigations stories like hers on any other network that I'm aware of. Watch Maddow for a while then watch Anderson Cooper (different formats/shows I know), but it makes him look like an air-head next to her. Obviously a liberal show.
Hannity is college drop-out who made a name for himself by being an asshole on college radio, attacking gays/lesbians, you know his style. Roger Ailes saw that and thought he'd be perfect for Fox. He's a shock-jock on national TV, completely clueless,. He represents some of the worst of the mainstream right-wing conspiracy peddling. The guy coordinates with the Republican party and the president directly on messaging. Many of his guests are hacks, and he treats opposition guests with no respect...it's the perfect type of show for Trump-types. .
That Maddow has better ratings, not sure how important that is other than...yay.
She's obviously spent her life learning about the subject and history of politics and policy, and is commenting largely on politics and policy as her career. Hannity tows the right-wing culture-wars and liberate-hate propaganda. Entirely different people and shows, purpose and life goals.
And that's being generous.