The combination of Reach/Kinect will be much stronger than GT5/move . Reach already crushed any type of hype move could have, that's obvious and was expected. Now the tricky part is the clash between GT5 and kinect . GT5 will give a big boost (for a few weeks at least) to the ps3 in EMAA and a considerably smaller one in Japan. Its effect in NA will be insignificant, IMO. Now kinect....well here's the deal....i believe kinect will be a smash hit, at least initially giving the 360 some unbelievable weeks in NA plus a decent boost in EMAA. The boost that the 360 will receive in NA will be far beyond what a hit game can do, i am talking about over 300k first week of kinect's release for the 360 just in NA.
I believe that even in GT5 launch week there's a very good chance (i'd say it's almost certain ,IMO) that the 360 will outsell the ps3 , on the back of huge NA sales. I really believe that the launch of kinect will be the exact opposite of move's launch , it will be a true event . I expect lines and hundereds of thousand of consumers buyning the 360/kinect bundles from day 1.