There is more focus on the Oscars than the Grammys. The Oscars are instructed like a good film. They have a beginning, middle, and end. They surprise us mostly, but also give us our expectations sometimes. The Oscars have more categories, as well as being around longer, so they have more experience in putting it together.
The Grammy's are much more organized than the Oscars. The Grammy's have more than 70 categories, so it has awards in every genre you can think of, unlike the Oscars. The performances are a lot more spectacular and more entertaining. Also, the Grammy's have little to no controversy over the nominations.