Oh don't make me do this...
So apart from multitouch, which isn't needed for gaming purposes, how exactly is a capacitive touchscreen better..?
If Nintendo intend their next gen console to be used only for gaming they've made yet another monumental screw up. You don't think the screen on the U controller will have a browser, and other apps which would benefit massively from a capacitive screen? Of course multi-touch will be important.
And who's to say multitouch couldn't be used in games? You seem to be under the impression that Nintendo don't use capacitive because multitouch isn't needed - whereas the reality is multitouch isn't used in games because the screens aren't capable of it. And before you say "we don't need it because there's buttons on the side that'll give you those functions" don't bother - that's like saying my car doesn't need an engine because it's got no floor - so I can power it Fred Flintstone style.
Resistive touchscreens are more accurate..
You're hung up on accuracy, but capacitive screens are more than accurate enough. Sure, resistive can have almost pixel perfect accuracy whereas capacitive is more "within a few pixels" but in what games are you going to need to be accurate to within a pixel or two? That's not going to be fun - that's a chore.
I'm surprised at your quest for accuracy when you've spent the last five years extolling the virtues of the wii - which spent the first half of it's life ridiculously inaccurate, and the second half was merely stupendously inaccurate thanks to it's "plus" peripheral.
Resistive touchscreens ... can detect and distinguish between different amounts of pressure
Oooh, that's nice. Gets used a lot, that, does it?
Actually, I've never heard of that, and I can't see how it'd work - unless you had multiple layers of flexible screen - in which case the cost would rise and the accuracy would diminish. You could conceivably simulate the effect with a finger or softer stylus by saying a touch with larger surface area is equivalent to touching harder, but that's going to be a poor approximation of the effect you're touting.
Resistive touchscreens ... can be used both with and without a stylus
You want an input method that's accurate to the nearest pixel and can be used by a finger? A finger that presumably covers several hundred pixels with a touch? How's that better than capacitive? It really isn't.
And using a stylus when gaming on the big screen and using the tablet controller definitely doesn't sound smooth.
I can picture it now. I'm cornered in a massive multiplayer FPS war online, and I want to use a smoke grenade to hopefully aid in my escape. I ask everyone to hold on for a minute while I relinquish all control over the right side controls. I'm no longer able to shoot, turn, jump, duck, change weapon, etc - but I do now have a hand free to extract the stylus from it's handy little housing so that I can pick the utility I want from my inventory. Putting the stylus back away I tell the internet folks they're okay to carry on shooting now...
Resistive touchscreens ... are cheaper.
That's the only thing resistive has in it's favour. You can't use that in an argument against me, though, when I was clearly saying capacitive screens are more expensive than resistive ones.
I suspect Nintendo will use resistive - and price will be the main reason. Price is a massive deciding factor, of course - but if you cut corners to save money then you're shooting yourself in the foot. The 3ds would've been more expensive had they included a second analogue stick, so they decided to just use one. Stupid stupid move.
The only thing I can think of that a capacitive touchscreen can do that a resistive touchscreen can't is allow your fingers to zoom in and out.
Tis the main thing, aye - and a major thing at that. Don't belittle it - it's fantastic and is already used well. There's also the tactile factor. Moving your finger across a piece of glass is so much nicer than doing so across a piece of flexible plastic. Urgh - it's like trying to distort the display on your old lcd school calculator. /Shudder.
The benefits I've listed above outweigh that disadvantage imo...
They don't imo.
Opinions, eh.
... a browser, which is really the only app that I can think of that this feature is handy for...
Really? That's very short sighted of you.
... a browser... can be given + and - buttons on the touchscreen to zoom in and out.
Resistive touchscreens are better suited to gaming...
No they're not. And again I refer you to the "If Nintendo intend their next gen console to be used only for gaming they've made yet another monumental screw up" point I made earlier.
just because it's older technology does not mean it's 'crap'.
Just because something's newer and might replace your favourite stuff from yesteryear it doesn't mean it's rubbish or evil. Try to embrace new and superior tech, Harv...
I can't carry on like this, pointing out all the problems in your entire post. It's taken an hour so far and I'm barely a third of the way through.
A brief rebuttal of the remainder of your post:
Light and ergonomically sound? No, it's much heavier than current gen controllers, and much less comfortable and intuitive. That third part will partly be because it's new and different, of course, but the weight and comfort will remain.
If it can only support one controller it's a massive failure.
If it can support multiple controllers but they're over £40 each it's too expensive.
If you need a controller plus a wiimote plus a nunchuck they're taking the piss.
Motion controls are not superior to dual analogue. Most folk find them frustrating and inaccurate.
Arkham City was very good, and most folk thoroughly enjoyed it toward the end of 2011. Not sure why you'd deliberately wait until 2013 to get it.
Edit - BBCode error