The thing is, if you look at its immediate family (dam, granddam, great granddam) there aren't a whole lot of BIG winners. I liked Rock N Roll Heaven because he was a great horse, and his mum was a great horse, he has great siblings, his granddam threw great horses, and the great granddam had a lot of big winners. CaptainTreach has a couple of superstars... but immediately that's it. So I'd like to see how his first foals race before I'd send a mare to him (not that I have mares)
Breeding is interesting though because I don't know much at all about classic families. I'd be interested to learn more for sure!
Edit: I meant to reply to eliteblood but it didnt' work for some reason.