[As with everything, it comes down to risk. Wings cadet scheme is a risk, simply because the cadets they are recruiting haven't flown with CTC, haven't passed the ATPLs and haven't been known for long by CTC. The high failure rate is attributable to their high risk.
Unless I have misinterpreted this ambiguous paragraph, you are saying CTC cadets have high failure rates? In fact CTC wings have very low failure rates, I'm sure someone can state the correct figures (< or ~ 1%?)
As for resitting Wings assessment, I think they leave two years in between re-applications if not told otherwise.
This is done on an individual basis, some are 6 months, some are a year (not heard of 2 years though).
As to the labelling iCP cadets as less able than the Wings Cadets, I think we all agree there's nothing in it. I don't reckon anyone (inc DJ) meant any offence, it's just some are quick to notice (myself included!
) if a post seems to indicate this.