Look at Olympic Ferro - great foals, terribly un-ridable for most people. Get a talented person on the horse and they'll get great scores and make it to the GP easily, but the same horse with any less of a rider ends up with a behavior issue or 15.
The risk of a mediocre foal is greatly reduced when a good mare is used. Considering Toto is only eligible for breeding to approved mares chances are we're going to be seeing a lot of nice foals from him. Plus, it's not like Toto himself is poorly bred himself, Gribaldi has produced many a dressage horse (incl. Anky's mount, Painted Black). Interesting though he has Dutch jumping lines below - could we be seeing some jumping horses from him when bred with the right mares?