BOSTON -- The San Francisco 49ers, having already spent big for Patrick Willis, engaged in a lengthy internal debate before deciding to invest heavily in a second inside linebacker, NaVorro Bowman, last season.The St. Louis Rams also had big-picture NFL economics in mind when they sent the second pick of the 2012 NFL draft to Washington, a deal that stocked St. Louis with early picks while allowing Robert Griffin III to land in the nation's capital.