A true badass #1 receiver that can go up and take the ball away from a defender midair is one of the premiere positions and Doctson has the potential to be one of those.
To assess their comparative value, just look at what teams are willing to pay:
Wide Receiver Contracts and Salaries | Over The Cap
Center Contracts and Salaries | Over The Cap
I really like the pick. Imagine having 3 guys on the field that can all win, Reed, Jackson, and Doctsun.