Well your right this is the G6OC,and that they are different(G6 comes with lighted vanity mirror as standard eqipment)but the G6 is also bigger and im sure heavier too than the 2005GAGT1,G6 also has more HP and torque,but it would need more to pull the extra weight.Styling may be different but if you look at the big picture and go to pontiac website,do a comparison you will see that they share alot of the same features.But your right they are so much dirrerent.But in my opinion ( and you know what they say about 'opinions')the G6 is just a newer,updated GA with a new name.
well, you know what they say; "Bigger IS better", at least thats what my girlfriend tells me.......maybe thats why i haven't seen her for a while. she drives a Chrysler LHS!!!! i guess in THIS case, i would have to strongly disagree with her, but not to her face, of course!! THAT, would be pure suicide......lol