It's terrain based...

Fat tires are great for really rough/nasty surfaces, sand, mud and snow.

They provide flotation and quite a lot of bump absorption...you can typically run them down at 10psi and lower depending on tires and wheels. They aren't the same as a full suspension for drops etc but for rolling over rocks and roots they are pretty compliant.

They aren't generally "fast" they are about going places more easily...a Rokon Ranger of bicycles.

Nothing fast about this as a motorcycle, but it will go places you aren't getting to go with a normal bike, at least, far more easily. It's about getting there.