it wouldnt kill them to do it, at least to make there so call masterpiece a good game
After Lair's release, Factor (4.5) made a statement to the effect of the PS3's potential being maxed out on Lair. Lair had more problems than just the control -- for example, the framerate was is a significant problem. Control and framerate go hand in hand -- you can't control accurately if don't have the granularity to do it with.
Lair was also delayed several times. It's not like they could fix their problems in a few months. This is something that would take 6+ months to address at least. The kind of expertise that they'd need to fix, for example, the framerate problem isn't exactly cheap.