Project Natal made big waves at E3, arguably more than the PS3 motion controller, soon after both press conferences announced their respective projects many debates were sparked as to which tech was the superior one. Both "controllers" are fairly different and it seems that the two are going to be targeting different markets.
With both project natal on the Xbox 360 and Motion controller on the PS3 in the works one might think that Nintendo would start getting scared from the competition. However this is not the case for Miyamoto, in a recent interview he stated that he's "flattered" his competitors are moving in the same direction but when asked if he was worried he said he wasn't at all, he later stated that their competitors do not provide the level of depth Wii Motion Plus has.