This, the training department works VERY hard to get people through training; in some cases giving extra sim time much more liberally than other airlines would. They take the decision to let people go very seriously and it takes a continuous record of lacking situational awareness, disregarding SOPs, or making unsafe decisions. The people I saw get let go from initial were all career change types with very little experience and/or recency in an IFR environment, which will make Dash training difficult where you are inherently task saturated.

In upgrade, you get a very thorough review of systems and procedures which I felt adequately prepared you to make the right decisions in the sim. Some of the scenarios they'll put you in require a bit of critical thinking and its more an excersize of flaws in the checklists and an evaluation of your ability to successful manage the big picture. Slow down, take your time, use effective CRM and you will be just fine. Trust me, if I can do it you can too. This isn't rocket science and they expect you to make mistakes. Just accept them, learn from it and move on. The only "surprise" so to speak was a limitations test on day 1, which shouldn't have been that big of a surprise. If you're a qualified first officer you should already have that down right?

Also, as another poster mentioned these issues are limited to the turboprop. The only person I've heard of who failed jet upgrade busted Dash upgrade and then didn't pass the limitations test in jet upgrade a few months later. Everyone else has done just fine.

For either program, study hard, have a good attitude, be humble and you'll make it through. Cooperate graduate man.