You guys are all still missing the point
It's not about the aircraft the guy has previously flown, it's about the overall quality of the candidate and the quality of his previous airline background.
I know a couple of ATR and Dash-8 instructor/examiners from Air NZ and Virgin Australia who are probably going to apply for this. Captains with extensive backgrounds in CRM training, sim checking, safety investigations, writing of ops manuals etc, guys who live and breathe aviation.
These guys have been performing at the highest level, in airlines with some of the highest expectations and operating standards on earth. They have 10,000ish hours, most of it command time, they're still in their 30s or early 40s.
When you have your captain incapacitation event, would you seriously rather have that guy sitting next to you? Or some wet behind the ears rich kid from you-know-where, who left school, faked his licence and logbook, and then bought 1500 hours of A320/B737 time with daddy's money from some shonky third world Indo or Thai outfit? And has learned nothing in that time except how to say "yes captain", move the flap lever, fake a load sheet, and ignore an MEL, and has never made a command decision in his life?
Yes of course there are some useless turboprop pilots out there also. Yes of course the "most" preferred option is good and highly experienced jet pilots. I don't disagree with either of those facts. It's the job of your interview and sim screening guys to sort out the good guys from the muppets though isn't it.
But seriously some of you sky gods need to climb down from your "jet" high horses, and look at the big picture of overall candidate quality.