Don't know anything about training down but I can tell you this
Captain Crunch has 103 registered North American foals. 4 have taken marks which is way below average for that many foals. I don't know who controls his syndicate or what kind of mares he got but I'm sure they are not happy at this point
Courtly Choice from 49 foals has 6 that have taken marks which is right in the middle of average.
Don't think any of them have shown extreme speed yet but McIntosh probably has a couple with it. Being a son of Art Major I don't think that much is expected of him anyway.