Cerberus+1 is like gasoline for prismatic builds
No it's not the highest damage weapon, but it generates sooo much transcendent energy and doesn't need to build up to hit max damage like the other high damage kinetic primary options.
This makes it work much more conveniently with ability heavy prismatic builds because you can just use it to deal quick damage between abilities. It also extends transcendance once that it's active very well.
If you were curious about it you should give it a try.