Generally speaking, premium prospects don't get traded. I'll use the extreme example, I don't think I'd trade vlad straight up for Syndergaard if we had him. He could be a top 10 player in baseball before he can legally drink a beer in this country. This bleacher report actually seems to know a bit about our prospects. They can see that Peralta is a very good prospect, probably the best prospect in that trade. Also that Henry is likely to rise significantly up our prospects list at the midseason update. That offer is likely around a fringe top 50 prospects, another top 100 prospect(80 or so), a just outside the top 100(erceg), and Henry who plays a premium position and is on the rise. 3 likely impact prospects, and then Henry who could also be an impact prospect. That's a considerable package, especially considering the multiple impact arms in the deal, but I'm not sure I'd offer that for Syndergaard with his injury history. Syndergaard in general is so tough to value due to his upside and injury history.