Wrong. They aren’t similar at all. BOB doesn’t require a “perfect act of love” just like actual baptism doesn’t either. Go read Trent. The preparation for justification by the sacrament (and BOblood is the sacrament) requires an imperfect preparation. Per Trent.
But St Alphonsus says that BOD does require a perfect act of love, which, in my opinion, is not possible, based on Trent.