Acknowledging that any prospect can completely bust and flame out, those are fine conservative projections. Safe bets. But that doesn't cover their upside. I don't know if Wheeler explicitly caps them them at his projections, but from his track record sticking his neck out on guys like Minten/Danford having innate traits and tools that make it so no one should be surprised if Minten turns into a shutdown 2/3C and Danford into solid mid pair DFD regardless of their junior production isn't in the cards.
Sure, project them as a 3W, 4C, 5-6RD. But don't value them as if that's the max.