I've never made Kristina out to be a Saint, I don't recall anyone doing that. She was just damn good at pretty much everything she did - except the tv presenting thing but that was amusing, I wasn't impressed with the shoving the lollypop in the child's hand though. Yes, she was ruthless at times, but she was still the best by far and I liked her a lot.
Adam was well and truly out of his depth unfortunately. Nice guy, but became generally useless. I'd have become fairly impatient with him too.