Yah its the lowest but i think its close to the Wii attach rate

http://www.eurogamer.net/article.php?article_id=285295

Actually the atach ratio on Wii and X360 is the same if you count Wii Sports.

According to VGChartz it's pretty damn close to the Wii.

The good games have just started to flood in, it's hard to say whether or not it will become higher than the Wii after Christmas...

 but if its one game its will not affect the ratio that much maybe its will be 5.7 but not 6.5

 yah with all this good games coming i think the ps3 will easily beat the wii ratio before the end of the year. 

If its one game with Wii Sports alike sales, it will

atach rate is that how many games the most people have on their console right?

hmm..
i got 21.

Easy explanation: people touched perfection by playing uncharted, so they were afraid to be disapointted by other games and stop buying'em =p

I have 7 games on PS3 and it will remain that way forever now, oh how I love you rentals :D

I think you should take into account the console lifetime. The 360 has been on the market for 12 to 15 months longer than the Wii and PS3. The tie ratio should gradually increase over time. Also, the Wii is "penalized" for its success at moving consoles. It's fairly impressive for all 3 platform holders. It's a shame that ancillary revenues (xbox live paid memberships, in-game advertising, psn/xbox live downloads, movie rentals, etc.) don't have a similar measurement.