Is this a team-role model like Belbin?
No. Belbin is a published team-role framework built for a different purpose over decades of work that is not ours, and this is not it, is not based on it, and does not map onto it. These are six roles we wrote about what people do in a meeting, and the honest description of them is that they are a shared vocabulary, not a model of anything.
How is this different from finding out my leadership style?
A leadership style is how you get work out of other people over months. This is what you do for sixty minutes when the room fills up, and the two frequently disagree. Plenty of people lead by consensus and turn into a Driver the moment somebody opens an agenda.
Why can nobody score one hundred on a role?
Because each question offers four of the six roles, so no role is on the page every single time. Your percentages rank the six against each other rather than measuring how much of each you have, and the highest any single role can reach here is sixty-seven.
I am different depending on the meeting.
Most people are, and it is worth taking twice. Pick one kind of meeting, the weekly one with your own team or the one with people more senior than you, and hold it in mind for the whole quiz. An answer averaged across two very different rooms describes neither of them.
Can my employer use this on the team?
As something a team does together and then talks about, it works well and that is what it is for. As anything with consequences, no. It is playful, it is easy to answer strategically, and nothing here should ever touch anybody's job, pay or standing.
The Observer sounds like the least useful one.
It is the one most often misread, which is a different thing. A room full of Drivers and Improvisers decides quickly and hears nothing, and the person who listened all hour is usually the one holding the sentence that mattered. What is fair to say is that the role costs you visibility, and the report is direct about that.
Two of my roles came out level.
Common, and the pair usually describes you better than the winner alone. The Driver with the Questioner underneath runs a very different meeting from the Driver with the Peacemaker underneath: one interrogates the plan before closing it, the other closes it and checks the room afterwards.