Problem is, those options are equally available to the paladin. They could just as easily be the ones in possession of such dagger or boots. Or Abdirak ran off, taking his items with him (as he usually does in my play throughs).
Btw, Sanctuary doesn't require concentration and lasts 10 rounds, that's a lot of ritual dagger usage. I'm thinking the devotion paladin has an edge here, not sure if ancient's ranged ensnaring smite is as situationally useful.
And again, with more variables, we're even less able to compare who comes out on top.
I'm still betting on barbarian simply because of their damage resistance - and in BG3 helmets negate crits, which hurts paladins more.