The A300 has leading edge devices and gigantic flaps; the Challenger Regional Jet has neither.
The CL850 swept, "hard" wing jet - you can't get away with a contaminated wing on any CL600-series like you can a King Air or Citation. Deice if you need to, use the AI switches if its cold in visible moisture or departing a contaminated runway and the airplane flies just fine.
I loved flying the CRJ - it was fun to land at its MLW of 47,000lb after a target approach speed of 147kias and get the thing stopped in 2500' of runway. For all the compromises of the CRJ (takeoff/climb performance, cruise speed & altitude, etc), stopping isn't ever an issue.
It'd be nice if it had 3000nm+, but don't ever forget - its a converted regional jet and given its cabin size & price point there are going to be some compromises...