Matt Waldman’s RSP provides a sample pre-NFL Draft scouting report of 49ers QB Brock Purdy, a passer Waldman gave a higher grade than the likes of early-round selections Sam Howell, Malik Willis, Desmond Ridder, Jordan Love, Zach Wilson, and Will Levis. The Biases of Draft Capital and Brock Purdy’s Hot Start in Context I didn’t…