There was a cool overlay photo to show relative sizes and shapes:
Looking at that image, it got me wondering about the straight vs angled wing. Straight vs angled tails, etc.
I get that a jet is faster than a turbo prop.
Cseries cruise speeds are: Mach 0.78 (828 km/h, 447 kn, 514 mph)
Dash8 Q400 cruise speeds are: 414 mph (667 km/h) 360 knots
Those are pretty close and yet that is a pretty radical wing design change.
Is this just the history an old design (Dash 8) vs a very modern design?