Pre-everything. Pre-MLB career. Goldschmidt was never even a top 10 prospect in the Diamondbacks system. Vaughn is a much bigger hitting prospect than Paul Goldschmidt was, and he's had 108 at bats.
Vaughn avg EV is in the 80+% percentile, Hard his % is in the 85+ percentile, and his max EV is in the 93 percentile. He needs to get the ball up a bit more and he'll be lights out.