Sion should be made into a Juggernaut, why?

Can't remember the fucking in his title. Did he get a promotion?

http://myriamsmemeoftheday.weebly.com/uploads/7/7/8/8/77889656/thomas-sees-triggered-trent.jpg

I thought he is a juggernaut by class.

Or is he in the same category as Poppy?

The tickle-the-enemy-carries-for-10-years-and-not-die class?