This series has long been on my future reading list. Have to finish the Hyperion series first (I know I'm way behind most folks in the reading department). I was excited to find out that this was being adapted for TV, and I got giddy when they showed that teaser last night - and I haven't even read one page.
Is the plan still to have one season = one book? Considering it's HBO, Martin's got plenty of time to finish the series. :-)
That weaker model just happened to find John first. Don't forget, in T2, the T-1000 was just a prototype. There is no telling how many Skynet was able to produce and then send back in time. It could just be this one, or one-hundred.