Stauffer and Rodgriguez put up similar numbers (besides the fact that GrayRod pitched more than twice as many innings) last year. K/9, Whip, BB/9, Stauffer actually had a better ERA.
Not saying they're equal as prospects now, but sticking to my original comment. If Stauffer and continue to post similar numbers to GrayRod then he should be considered a top of the organization pitching prospect in the same conversation as D.L. and Gray Rod.
Stauffer is younger than D.L. and was born the same year as GrayRod. Stauffer is actually bigger than both of them, suggesting that he could continue to add muscle and develop into a legit man on the mound.