Better Bay Area rookie receiver: Darrius Heyward-Bey or Michael Crabtree?

If you look at the film, Michael Crabtree wins, hands down: size, speed, hands, and elusiveness. But he's got a foot injury that may be more crippling than people think. So, NFL Fans, who will be the better receiver: Oakland's much-maligned 1st-round reach Darrius Heyward-Bey, or currently-injured SF 49er Michael Crabtree?