Indeed, that image is impressive! Amazing how he gathered 196 models do to that picture! One of the good things about Stock Performer is that you can identify such images quickly and can then better decide how to organize your next shoots to take advantage of those insights. Kristian is a great example of using data to produce as smart as possible!!
Stock Performer is a great tool and very helpful!
But, lets not exaggerate its contribution to Kristian's success. He would do just fine even without any precise analytics.
Because his success is based on his talent, hard work, a great deal of luck to start the right job at the right time (microstock lifestyle in like 2006 or 2007), being based in Serbia (cheap models, locations, great logistics for stock photographers), consistency, bravery, talent. I've must forgot something, but you get the point.