I am a big time Blackhawks fan, but even I would take Crosby over Toews.
Crosby is the most exciting player to watch with the puck. Toews is great, don't get me wrong, but Crosby is on another level. I think a lot of Toews success can be atributed to playing on arguably the best line in hockey with Sharp and Hossa.
Both are great players, and any franchise would be thrilled to have either of them as their captain.