Why do people say GT is leagues ahead of Forza?

[Jo21]

selnor said:

Leonidus said:
^ LOL
Gran Turismo - 96
Gran Turismo 2 - 93
Gran Turismo 3-A spec - 95
Gran Turismo 4 -8 89 (basically 90)

 

 Unfortunately for GT series it was pretty much alone for the first 3. As of GT4 it's had competition to deal with, of which it's been losing against. Forza came along in GT4's era. And Shift looks to join the barrage as well.

forza sold more than GT4?! When?