The Clown Prince of Crime
Super Freak
Correct she was less versatile than the T-1000 which could be the reason he was sent after the Primary Target (John himself) while she got the Lieutenants. But she was specialized in taking out other Terminators and for that purpose she was more potent than the T-1000. The T-1000 appeared to require the aid of weapons or his environment to disable a T-800. The TX could do it by herself with no additional tools.
Actually T2 made its own ending irrelevant since you can't stop a war with a machine created *by* that war. In order for Uncle Bob to be able to exist and travel back in time the war had to happen. So T3 provided that inevitability which T2 implied was no longer a given.
Says who? T2 had a perfect ending and the whole plot of the film is to change the future. The T800's mission was to protect John Connor, not necessarily to kill the T 1000, just to protect him, but the mission changes when John orders him to save his mother, then once Sarah and John find out that Uncle Bob knows who is responsible for JUDGEMENT DAY, the mission is to stop that future, and they did...even though Uncle Bob left an arm somewhere, but lets ignore that So there's no reason for Skynet to even exist in part 3, but of course, their explanation in T3 is that, it was "inevitable" and that the original target was that general guy who was the father of the girl that John kissed or some crap like that....I don't remember the details.
As far as the T 1000 goes, he could have killed the T 800 without any external weapons because he WAS a weapon, but why he didn't just stab Uncle Bob? Who knows? A mistake I guess. So why would Skynet send a less advance model though..it's the third time they are doing it?