We'll be sizing up NFC West receiving corps all season after Percy Harvin and Anquan Boldin joined the division this week.2012 Receiving TotalsIn the video above, AFC North blogger Jamison Hensley and I took an initial look at the Boldin trade's impact on the Baltimore Ravens and San Francisco 49ers.I've separately put together a chart comparing 2012 receiving totals for Boldin and new teammate Michael Crabtree against those for incumbent Seattle Seahawks receivers Sidney Rice and Golden Tate.