Sony deserve to loose to the Wii and the 360 and the PC.
If i did not know better i would say it's almost like they want to loose as much money and customers as possible.
They failed to have a better motion support than the Wii and i am talking software here - the hardware is very capable it's hughly undersupported by sony.
For the PC gamers they fail to support in game mouse support so any PC game on the PS3 is inferior gameplay to the PC version so why would PC gamers go to the Ps3 ! - my next game bioshock will be the PC version not the ps3 verion for this reason.
For the X360 they usually fail to exploit the Blu-ray to add game features like videos , production info , or other bonus content in most cases. And regarding motion support many games end up with the same lame interface the 360 gets which as i mentiond is inferior to the PC version.
It's really amazing they are not doing actually worse - still the good thing is that the undeserved success with the Ps3 may yet produce some better games in the future.