I read the stats - 80% of couples attending reconcile, etc - and wonder whether it is just the pre-selection - ie only couples on the way to reconciliation agree to go.
In either way, the message is the same: It works, but only if both parties are open minded and willing.
The pre-selection does not exclude those who are reluctant to reconcile, in almost every case, one is extremely reluctant (at least that it is my understanding).