It's more a philosophical difference than a literal one. BPA basically means drafting better athletes, guys with a higher ceiling but not necessarily quick or immediate development as opposed to picks perceived as being safer, with a higher floor and more instant gratification, but not necessarily the greatest long-term potential. Positional need is obviously tied to both. There's more risk with BPA, and while they can contribute immediately it's not a given. One the flipside, sometimes safer picks can exceed expectations. Or bust.
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