Does the touch resolution of the new iPad match it's retina display resolution?
Having just googled, I can't find a definitive answer to your question.

However, intuitively, I'd say that I can't see any way that, with a finger, you could select a point with accuracy anywhere close to 264 pixels per inch (see the Display section of the iPad technical specs).

And none of the Stylus reviews I've seen (such as this recent one from The Verge) suggest that any available styluses/stylii can reach a significantly greater accuracy than a finger - presumably because of the capacitive nature of the display: see e.g. this from Wikipedia


  Capacitive touchscreens are more expensive to manufacture and offer a
  significantly lesser degree of accuracy than resistive touchscreens.