The current training program is not designed for those that have limited experience. I have heard instructors say that the program is based on pilots having at least 5 yrs of 121 if not more prior to coming here. Is the 320 hard? No, but to cram 10lbs of crap into a 5 lbs bag, well.....
Most legacy airlines do all their training in the right seat and have at least twice as many sim periods than we do.
The only reason this place trains like this is for any other reason we do things, it's cheap.