I'm not sure what's the point comparing benchmarks this way.

Choosing a database is not only about performance, it's about the type of application you are building, the stage it's in (prototype product doesn't have the same need as a product that has grown over 5 years).

It's also about the people that works on the project. Some projects are better handled in a specific language (ruby/java/php,asp.net, etc.)

For example, using MongoDB on a ruby stack to build a prototype is a pretty good choice. Moving some loads off mongo to redis would be a solution later on. And eventually, the need would arise to migrate your mongoDB stack to Cassandra.