I wrote the top 20 and also that short blurb form the prospect camp too.
In talking with the Oiler socut (who is a fan of Platt's for sure) it wasn't a case of Platt not being good so he didn't make the list. It was simply that the guys on the top 20 were better. Platt was on the short list of guys who just missed the "just missed the top 20" list. He came in at about 26th I think.
He should be a solid pro, but might be a career AHL player. Nothing wrong with that, he could still get an NHL shot. We'll see how he does at next fall's camp.