You and Roche aren't getting what he was talking about. Ratzinger was explaining what a sacrifice is.
A sacrifice properly so called is something done for that honor which is properly due to God, in order to appease Him: and hence it is that Augustine says (De Civ. Dei x): "A true sacrifice is every good work done in order that we may cling to God in holy fellowship, yet referred to that consummation of happiness wherein we can be truly blessed." But, as is added in the same place, "Christ offered Himself up for us in the Passion": and this voluntary enduring of the Passion was most acceptable to God, as coming from charity. (ST III q. 48 a. 3)
Ratzinger's whole point was that the value of sacrifice is from charity, and not from the destruction itself. "A true sacrifice is every good work done in order that we may cling to God in holy fellowship". Of course Ratzinger believes that an immolation (offering Christ to God) takes place:
Again it is clear that the Eucharist of the Church – to use Augustine’s term – is the sacramentum of the true sacrificium – the sacred sign in which that which is signified is produced.
No, it is YOU who do not get what Ratzinger is saying. He denies an immolation takes place. There is no destruction of any Victim. The notion of sacrifice in the new Mass is not propitiatory in the sense given by Trent, which is not that the "value of sacrifice is from charity, and not from the destruction itself" as you state. This is not the meaning of Trent at all. Nor is it the meaning ascribed to the Cross by Scripture.
Ratzinger argues that modern man "can no longer imagine that human fault can wound God, and still less that it would require an expiation equal to that which constitutes the cross of Christ." But this redefinition of sacrifice flies in the face of traditional teaching--that the Mass is a re-presentation of Calvary, with Christ's immolation as the satisfaction given for our sins, the price, that is, which is paid to the Father vicariously by the Son. That is part of the deposit of faith.