So what he wants us to do is play the PS3 once a month when our girlfriend/wife wants to 'make something'

Play the 360 a few times a month because you may get bored of playing Revolution all the time. And hell, Play Revolution all you want. Its that dirty skank that keeps on giving even though you told her to go away by throwing food out ther door
Anywho, Kojima knows nothign of how Revolution will turn out (ie: Nintendo being secret b@stards pulling the 'Mario with the Water Pack that is so uber that other companies may steal it) so I dont base his comment on anything.