if every implementation had been as good as Flower's it would have been harder to keep dismissing sixaxis use as a gimmick, but even for Flower there were people going 'just gimme analog stick controls dammit' ...
I have a feeling players who are competitive and see games as a "sport" usually dislike SIXAXIS. It is inprecise/floaty compared to the sticks because we control in 3D space without support. The movement is larger too.
People who see games as casual/creative recreational activities or art appreciation may like it more because it's a curious, new experience. I have a friend who was too shy to play in front of me, picked up and played Heavenly Sword because he saw me fumbling badly initially. It kinda levelled the playing field for us.
In terms of "funness" of the control scheme, my household rate it like this:
1. Folklore
2. Flower
3. Heavenly Sword
4. MotorStorm