You are exactly right on all points. Most Greco stars weren't great college wrestlers. Always exceptions. But for the most part.I like Greco, and think that training a bit of Greco and even wrestling in tournaments is a good thing. But, making a world team means that Greco will become the primary style trained and focused on for the next 3-4 months. Training will be at a high level at the OTC.
I think the track record for high level Greco guys, that aren’t heavyweights, is that they don’t have a lot of college success. Due to spending too much time not attacking, or defending, legs.