Actually Archer,
A boeing pilot will always get priority over a CRJ or MD pilot (for a Boeing course). Simply because they are familiar with the Boeing 'way' (esp 737NG guys) and from experience have fewer issues with the transition.
Its a bitter pill to swallow but that's how its done.
Quite frankly I think 320 guys will struggle if they go ahead with the CCQ course only because the Emirates SOP's are.... long winded. 2 weeks ground school then line training will have your brain melting i think. Unfortunately a hand handful of line 'trainers' will check you as if your on a command course. Most are great just some have no idea how to train.