yes it is unless u get a gh version for ps3
Yes and Yes.
No but in Guitar Hero 5 it will work
Yes, it works for all the Guitar heroes that came after Guitar Hero 3
It should work for any Guitar Hero game for the PS3.
if you have the 60gb model of the PS3 which includes backwards compatability then yes it should work
Yes, with Guitar Hero: Aerosmith and newer.
Yes, it should.
Yes it works if you have a PS3 or XBOX360 guitar.
It depends, if you are playing this on an early PS3 (20 or 60gb) which still contains the PS2 backwards compatibility, it might work. Otherwise it won't work on your PS3 and last I checked you can't use PS3 guitar hero controllers on a PS2, even though it has USB ports.
Matters which console you have. Becuase a PS3 controller would not work with a 360 or a wii but a PS2 Guitar hero controller will work in a PS3 (im pretty sure)
Yes, they can
If Your Question Is "Will Rock Band Guitar Work With Guitar Hero The Answer Would Be No,Because Their Diferent Games And It Isnt Made By The Same Company, But What You Asked Was "Will a Rock Band 1 Guitar For PS2 Work With Guitar Hero World Tour For PS3" And Its Simuilar To The Answer Above But Its A PS2 Gitaur And A PS3 Game So The Answer Would Be No In Both Ways.
If your PS3 is backwards compatible (ie. the 80GB or 60GB version) it will work.
Only for xbox 360 are all guitars and instruments compatible with guitar hero and rockbands it doesn't work with PS3 or Wii.
On the PS3 Guitar Hero it has better graphics and it has online play whereas the PS2 doesn't.
u cannot use the gh3 guitar for ps2 for the PC