Yes I found it very strange that they went through the trouble of having Arnold open the sun visor to get the car keys as if he somehow "remembered" the events of T2 and then they went out of their way to spell out that he was not only a completely separate Terminator, but a different model altogether.
And then they had John be an absolute idiot by acting surprised that Arnold didn't know "hasta la vista" or anything when he knew full well that this was a completely different terminator, considering he actually WATCHED THE OTHER ONE DIE.
Good argument but not sure she will totally buy it. 
That's why I separate T2 and T3. Even if T2's one liner Arnie annoys and isn't something you prefer to watch there is still some plausibility to it. With T3 it was just ''the audience expects one liners from Arnie'' and they just put them in there with no explanation about why this particular Terminator liked to talk so much, even when no other characters were around to hear him - ''She'll be back!''
