That's the part people have to remember, no one has more info on this guy than the team that just traded him.
It's not uncommon at all for an older prospect to dominate A ball and then slam into a wall when they reach the upper minors. Frasso may not see AA until his age 24/25 season, we'll see how it goes.
White can be a good RP and decent depth SP today, and has years of control. He may not represent Frasso's ceiling but he's also so very far above Frasso's realistic probable outlook.