It`s all toward personal tastes.
then again, if you are fan slasher,
how many of them there on Wii or x360?
while ps3 already has GOOD NGS, HS and average Genji(N9 on x360 +soul calibur legends on wii).
if you are fan of 3d platformers:
kameo - x360, ratchet - ps3, SMG, paper mario(?) - Wii.
if you are fan of 3rd person horrors:
x360 nothing. ps3 - almost nothing(imabikisou), wii - port RE4(?).
if you fan of fighting games:
T5:DR, VF5 - ps3, Doa4, VF5 - x360, ??? - wii.
racing simulators:
forza 2 - x360, GT5P - ps3, ??? - wii.
fan of jrpg:
EA, ES, BD - x360, EA - ps3, ??? - wii.
Every 5 seconds on earth one child dies from hunger...
2009.04.30 - PS3 will OUTSELL x360 atleast by the middle of 2010. Japan+Europe > NA.
Gran Turismo 3 - 1,06 mln. in 3 weeks with around 4 mln. PS2 on the launch.
Gran Turismo 4 - 1,16 mln. with 18 mln. PS2 on the launch.
Final Fantasy X - around 2 mln. with 5 mln. PS2 on the launch.
Final Fantasy X-2 - 2.4 mln. with 12 mln. PS2 on the launch.
1.8 mln. PS3 today(2008.01.17) in Japan. Now(2009.04.30) 3.16 mln. PS3 were sold in Japan.
PS3 will reach 4 mln. in Japan by the end of 2009 with average weekly sales 25k.
PS3 may reach 5 mln. in Japan by the end of 2009 with average weekly sales 50k.
PS2 2001 vs PS3 2008 sales numbers =) + New games released in Japan by 2009 that passed 100k so far