[1.2.384] A Cannon Shooter is born

From that 120 Video, usually for CB's and Pally's their defence stat is in red with the addition defense from their passive skills marked, doesn't seem to be the case here.

I think that's because for Paladin's, it's TECHNICALLY a buff. For this class it seems to be permanent. For Paladins, if you remove your shield the buff is lost, but for CS there's no way to remove the buff once you've gotten it. That's why it's Red with the Total (Base + Buff) number for Paladins but not for Cannon Shooters.